RHSA-2026:82304
Vulnerability from csaf_redhat - Published: 2026-10-13 14:42 - Updated: 2026-10-14 20:30A flaw was found in the xmllint program distributed by the libxml2 package. A buffer over-read in the xmlHTMLPrintFileContext function in the xmllint.c file may be triggered when a crafted file is processed with the xmllint program using the `--htmlout` command line option, causing an application crash and resulting in a denial of service.
| Product | Identifier | Version | Remediation |
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| Unresolved product id: Cert Manager support for Red Hat OpenShift release 1.17:registry.redhat.io/cert-manager/jetstack-cert-manager-acmesolver-rhel9@sha256:3752973d8d14f8f4e6aae043f0fd0137d4c217c55a2021592905532d965cf4c3_s390x | — |
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| Unresolved product id: Cert Manager support for Red Hat OpenShift release 1.17:registry.redhat.io/cert-manager/jetstack-cert-manager-acmesolver-rhel9@sha256:928fec688b73c3ec1ffedf2e54070bd64526268c73a9f4da80cc2ae7f6113ad3_ppc64le | — |
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| Unresolved product id: Cert Manager support for Red Hat OpenShift release 1.17:registry.redhat.io/cert-manager/jetstack-cert-manager-acmesolver-rhel9@sha256:d364759aa22097491cbefd8eafe7020da5fd9250ac80d592d5dc4d90499d2a3c_amd64 | — |
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| Unresolved product id: Cert Manager support for Red Hat OpenShift release 1.17:registry.redhat.io/cert-manager/jetstack-cert-manager-acmesolver-rhel9@sha256:e9fc6d36b29f1ea6002b5badc8d149c6ccb98d2d6bbf8c6b1364e471316987dd_arm64 | — |
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| Unresolved product id: Cert Manager support for Red Hat OpenShift release 1.17:registry.redhat.io/cert-manager/jetstack-cert-manager-rhel9@sha256:663adb650bca8deb7fec07d003dafa121f2b44e3009010bc656f8eb6854fc253_s390x | — |
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| Unresolved product id: Cert Manager support for Red Hat OpenShift release 1.17:registry.redhat.io/cert-manager/jetstack-cert-manager-rhel9@sha256:d2dc2603d281e2cef02fd3c2e8af210de2f223d3ace8946980b5d8c3e0745e76_amd64 | — |
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| Unresolved product id: Cert Manager support for Red Hat OpenShift release 1.17:registry.redhat.io/cert-manager/jetstack-cert-manager-rhel9@sha256:f24b52d6c67a90a4fc495c47a6442ef87a45d979cd87065e685643ebaa453d19_arm64 | — |
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| Unresolved product id: Cert Manager support for Red Hat OpenShift release 1.17:registry.redhat.io/cert-manager/jetstack-cert-manager-rhel9@sha256:f976ae8bc8c267b71e8a49b891b256d143ee7642908d0d6e73672eb2fcc32728_ppc64le | — |
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A flaw was found in GNU Coreutils. The sort utility's begfield() function is vulnerable to a heap buffer under-read. The program may access memory outside the allocated buffer if a user runs a crafted command using the traditional key format. A malicious input could lead to a crash or leak sensitive data.
A flaw was found in the interactive shell of the xmllint command-line tool, used for parsing XML files. When a user inputs an overly long command, the program does not check the input size properly, which can cause it to crash. This issue might allow attackers to run harmful code in rare configurations without modern protections.
CWE-121 - Stack-based Buffer OverflowA flaw was found in libtasn1. A remote attacker could exploit a stack-based buffer overflow vulnerability in the `asn1_expend_octet_string` function. This occurs due to a failure in validating the size of input data. Successful exploitation can lead to a Denial of Service (DoS) condition, making the affected system or application unavailable.
A flaw was found in GLib (Gnome Lib). This vulnerability allows a remote attacker to cause heap corruption, leading to a denial of service or potential code execution via a buffer-underflow in the GVariant parser when processing maliciously crafted input strings.
A flaw was found in glib. This vulnerability allows a heap buffer overflow and denial-of-service (DoS) via an integer overflow in GLib's GIO (GLib Input/Output) escape_byte_string() function when processing malicious file or remote filesystem attribute values.
The html.Parse function in golang.org/x/net/html has quadratic parsing complexity when processing certain inputs, which can lead to denial of service (DoS) if an attacker provides specially crafted HTML content.
A flaw in golang.org/x/crypto/ssh/agent causes the SSH agent client to panic when a peer responds with the generic SSH_AGENT_SUCCESS (0x06) message to requests expecting typed replies (e.g., List, Sign). The unmarshal layer produces an unexpected message type, which the client code does not handle, leading to panic("unreachable") or a nil-pointer dereference. A malicious agent or forwarded connection can exploit this to terminate the client process.
A flaw was found in the SSH Agent servers component (golang.org/x/crypto/ssh/agent). This vulnerability allows a remote attacker to cause a denial of service (DoS) by sending a specially crafted, malformed message during new identity requests. The server fails to validate the size of these messages, leading to an out-of-bounds read that can cause the program to panic and terminate.
A flaw was found in golang.org/x/crypto/ssh. An attacker can exploit this vulnerability by sending specially crafted GSSAPI (Generic Security Service Application Program Interface) authentication requests to an SSH (Secure Shell) server. The server fails to validate the number of mechanisms specified in these requests, leading to unbounded memory consumption. This can result in a Denial of Service (DoS), making the SSH server unavailable to legitimate users.
The html.Parse function in golang.org/x/net/html has an infinite parsing loop when processing certain inputs, which can lead to denial of service (DoS) in an exposed go application if an attacker provides specially crafted HTML content.
A flaw was found in curl. When an application uses libcurl to make multiple Negotiate-authenticated HTTP or HTTPS requests to the same server with different credentials, libcurl may incorrectly reuse an existing connection. This logical error can cause a subsequent request to be sent using the authentication of a previous user, leading to an authentication bypass.
A flaw was found in p11-kit. A remote attacker could exploit this vulnerability by calling the C_DeriveKey function on a remote token with specific IBM kyber or IBM btc derive mechanism parameters set to NULL. This could lead to the RPC-client attempting to return an uninitialized value, potentially resulting in a NULL dereference or undefined behavior. This issue may cause an application level denial of service or other unpredictable system states.
A key group selection preference flaw has been discovered in OpenSSL. An OpenSSL TLS 1.3 server may fail to negotiate the expected preferred key exchange group when its key exchange group configuration includes the default by using the "DEFAULT" keyword. A less preferred key exchange may be used even when a more preferred group is supported by both client and server, if the group was not included among the client's initial predicated keyshares. This will sometimes be the case with the new hybrid post-quantum groups, if the client chooses to defer their use until specifically requested by the server. No OpenSSL FIPS modules are affected by this issue, the code in question lies outside the FIPS boundary.
A flaw was found in curl. When an OAuth2 bearer token is used for an HTTP(S) transfer that redirects to a second URL, curl could unintentionally leak the token. This occurs if the second hostname has entries in the `.netrc` file, allowing the bearer token intended for the first host to be sent to the redirected host. This information disclosure could allow an attacker to gain unauthorized access.
A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted Online Certificate Status Protocol (OCSP) response during a TLS handshake. Due to a logic error in how gnutls processes multi-record OCSP responses, a client with OCSP verification enabled may incorrectly accept a revoked server certificate, potentially leading to a compromise of trust.
CWE-179 - Incorrect Behavior Order: Early ValidationA flaw was found in gnutls. This vulnerability occurs because gnutls performs case-sensitive comparisons of `nameConstraints` labels, specifically for `dNSName` (DNS) or `rfc822Name` (email) constraints within `excludedSubtrees` or `permittedSubtrees`. A remote attacker can exploit this by crafting a leaf certificate with casing differences in the Subject Alternative Name (SAN), leading to a policy bypass where a certificate that should be rejected is instead accepted. This could result in unauthorized access or information disclosure.
A flaw was found in glibc, the GNU C Library. A remote attacker could exploit this vulnerability by providing specially crafted inputs using the IBM1390 or IBM1399 character sets to the `iconv()` function. This could lead to an assertion failure, causing the application to crash and resulting in a Denial of Service (DoS).
A flaw was found in libarchive. This heap out-of-bounds read vulnerability exists in the RAR archive processing logic due to improper validation of the LZSS sliding window size after transitions between compression methods. A remote attacker can exploit this by providing a specially crafted RAR archive, leading to the disclosure of sensitive heap memory information without requiring authentication or user interaction.
A flaw was found in glibc (the GNU C Library). When an application uses the `gethostbyaddr` or `gethostbyaddr_r` functions with a `nsswitch.conf` configuration that specifies glibc's DNS backend, a remote attacker can send a specially crafted DNS (Domain Name System) response. This crafted response can cause the application to incorrectly interpret a non-answer section of the DNS response as a valid answer, leading to potential misbehavior or incorrect information processing.
A flaw was found in the GNU C library (glibc). When applications use the `gethostbyaddr` or `gethostbyaddr_r` functions with a `nsswitch.conf` configuration that specifies glibc's DNS backend, the library may return an invalid DNS hostname. This violates the DNS specification and could lead to applications receiving incorrect hostname information, potentially impacting network operations or security decisions.
A flaw was found in libcap. A local unprivileged user can exploit a Time-of-check-to-time-of-use (TOCTOU) race condition in the `cap_set_file()` function. This allows an attacker with write access to a parent directory to redirect file capability updates to an attacker-controlled file. By doing so, capabilities can be injected into or stripped from unintended executables, leading to privilege escalation.
A flaw was found in libarchive. On 32-bit systems, an integer overflow vulnerability exists in the zisofs block pointer allocation logic. A remote attacker can exploit this by providing a specially crafted ISO9660 image, which can lead to a heap buffer overflow. This could potentially allow for arbitrary code execution on the affected system.
A flaw was found in libgnutls. A remote attacker, by sending an extremely short premaster secret during an RSA key exchange to a server using an RSA key backed by a PKCS#11 token, could trigger a short heap overread. This memory corruption vulnerability could lead to information disclosure.
A flaw was found in gnutls. The PKCS#7 padding check, performed during decryption, was not constant-time. This timing side-channel could allow a remote attacker to potentially leak sensitive information about the padding bytes through observable timing differences. This vulnerability is a form of information disclosure.
CWE-208 - Observable Timing DiscrepancyA flaw was found in glibc, the GNU C Library. Specifically, deprecated functions responsible for printing TSIG (Transaction Signature) records fail to properly manage memory buffers. This oversight can lead to an out-of-bounds write when processing specially crafted TSIG records. An attacker could exploit this to cause a denial of service or potentially execute arbitrary code.
A flaw was found in glibc (GNU C Library). This vulnerability occurs when an application uses the `scanf` family of functions with a `%mc` format specifier, which is used for dynamically allocating memory for character input, and provides an explicit width greater than 1024. This specific combination can lead to a one-byte heap buffer overflow, potentially allowing an attacker to corrupt memory.
A flaw was found in glibc (GNU C Library). When the `ungetwc` function is called on a file stream using wide characters with specific overlapping single-byte and multi-byte encodings, it may attempt to read data outside of its allocated buffer. This can lead to the unintentional disclosure of sensitive information from memory or cause the program to crash, resulting in a denial of service.
A flaw was found in glibc (GNU C Library). The deprecated functions ns_printrrf, ns_printrr, and fp_nquery do not properly validate the length of RDATA (Resource Record Data) in a DNS (Domain Name System) response when processing specific record types like LOC, CERT, TKEY, or TSIG. A remote attacker could craft a malicious DNS response, leading to a target application crashing or reading uninitialized memory. These functions are intended for application debugging and are not part of the standard DNS resolver path.
A flaw was found in libxml2. A remote attacker can exploit a use-after-free vulnerability in the `xmlParseInternalSubset` function by providing maliciously crafted XML input. This improper handling of entity resolution can lead to a denial-of-service (DoS), making the affected system or application unavailable.
A flaw was found in OpenSSL. A signed integer overflow vulnerability exists when sizing the destination buffer for Unicode output. This can lead to a heap buffer overflow, which may result in a crash or potentially allow an attacker to execute arbitrary code. Exploitation requires an application to directly call specific functions with a large amount of attacker-controlled input.
A flaw was found in curl. When a new data transfer attempts to upgrade its connection using STARTTLS, it may incorrectly reuse an existing live connection. This reuse can occur even if the Transport Layer Security (TLS) configuration of the new transfer does not match the existing connection, potentially leading to an insecure connection being established.
A flaw was found in OpenSSL. When processing attacker-supplied Cryptographic Message Syntax (CMS) data using password-based decryption, an attacker can choose a stream-mode Key Encryption Key (KEK) cipher. This can trigger a heap out-of-bounds read, potentially causing an application crash and leading to a Denial of Service (DoS). This vulnerability does not require password knowledge and can be exploited before authentication.
A flaw was found in curl. When a libcurl-based application uses SCP:// or SFTP:// for transfers and employs the CURLOPT_SSH_KEYFUNCTION callback, it may silently accept an untrusted server. This occurs if the server's host key type differs from the one stored in the known_hosts file. The callback mechanism fails to enforce the host key restriction, enabling a connection to an untrusted server and risking a man-in-the-middle attack.
A flaw was found in SQLite's FTS5 full-text search extension. This vulnerability involves memory corruption, specifically an out-of-bounds read and a heap buffer overflow, which can be triggered by supplying a crafted database with malformed FTS5 page data. When an FTS5 MATCH query is executed against such a database, an attacker can cause process crashes, memory exhaustion, or achieve arbitrary code execution, potentially compromising the system.
A flaw was found in SQLite, specifically within its FTS5 full-text search extension. Attackers can exploit a heap-based buffer overflow by providing a specially crafted database. This crafted database contains malicious metadata that triggers an integer underflow during FTS5 MATCH query processing. Successful exploitation of this vulnerability can lead to a crash of the application or allow for arbitrary code execution.
A flaw was found in libxml2, specifically within the xmlcatalog utility when operating in shell mode. An attacker can exploit multiple stack-based buffer overflows by providing an excessively long input line. This leads to memory corruption, which may cause the application to crash or potentially allow the attacker to execute arbitrary code within the context of the xmlcatalog process.
A flaw was found in p11-kit. The RPC message attribute parsing functions p11_rpc_message_get_attribute() and p11_rpc_message_get_attribute_array_value() form a mutually-recursive call chain with no recursion depth limit when processing nested CKA_WRAP_TEMPLATE, CKA_UNWRAP_TEMPLATE, and CKA_DERIVE_TEMPLATE attributes. An unauthenticated attacker with local access to the p11-kit RPC Unix domain socket can send a specially crafted request with deeply nested template attributes, causing stack exhaustion and crashing the p11-kit server process and its dependent services.
A double free issue has been identified in libarchive's RAR5 reader. During parsing of a specially crafted RAR5 archive, the filtered_buf pointer may remain stale after being freed during unpacking state reinitialization. Subsequent processing of another archive entry can trigger a second free of the same memory region, resulting in a double-free condition. Successful exploitation may cause applications using the vulnerable libarchive API to terminate unexpectedly, leading to a denial of service.
A denial-of-service and resource exhaustion vulnerability exists within the `GDBus` component of GLib. The `gdbusauth` authentication mechanism fails to enforce proper length limitations on data lines read from a client. An unauthenticated local or remote attacker can exploit this lack of input validation by sending excessively long streams of data, causing the application to consume massive amounts of system memory and CPU, potentially leading to a crash or system hang.
A flaw was found in xdgmime. A heap-based buffer overflow can be triggered in _xdg_mime_magic_parse_magic_line() in the xdgmimemagic.c file on little-endian systems when an attacker-controlled MIME magic file in a user-writable XDG data location (e.g., in the $XDG_DATA_HOME/mime/magic path) is parsed by an application performing MIME type detection (e.g., via g_content_type_guess()). When performing byte-swap, incorrect pointer arithmetic on the write side causes an out-of-bounds write of 2 bytes, resulting in an application crash or memory corruption.
A flaw was found in golang.org/x/net/html. A remote attacker could provide specially crafted HTML, which, when parsed by the affected component, would consume excessive CPU resources. This could lead to a Denial of Service (DoS) condition, making the system unavailable to legitimate users.
A flaw was found in golang.org/x/net/html. A remote attacker could exploit this vulnerability by providing specially crafted HTML. When this arbitrary HTML is parsed and rendered, it can result in an unexpected HTML tree, bypassing input sanitization. This can be leveraged to execute Cross-Site Scripting (XSS) attacks, potentially leading to arbitrary code execution in applications that use the affected component.
A flaw was found in nghttp2. Due to missing internal state validation, the library continues to process incoming data even after a session has been terminated. A remote attacker could exploit this by sending a specially crafted HTTP/2 frame, leading to an assertion failure and a denial of service (DoS).
A flaw was found in golang.org/x/net/html. When arbitrary HTML is parsed and then rendered, it can result in an unexpected HTML tree. This allows an attacker to bypass HTML sanitization mechanisms, leading to Cross-Site Scripting (XSS) attacks in applications. Such attacks can result in information disclosure or arbitrary code execution.
A flaw was found in OpenSSL. A remote attacker could exploit this vulnerability by sending a specially crafted Cryptographic Message Syntax (CMS) EnvelopedData message. During the processing of a KeyTransportRecipientInfo with RSA-OAEP encryption, the system attempts to access an optional parameter field without first verifying its presence. This leads to a NULL pointer dereference, which can cause applications processing the attacker-controlled CMS data to crash, resulting in a Denial of Service (DoS).
A flaw was found in systemd, a system and service manager. An unprivileged user can exploit this vulnerability by making an Inter-Process Communication (IPC) API call with spurious data. In older versions (v249 and earlier), this can lead to stack overwriting with attacker-controlled content, potentially enabling arbitrary code execution or privilege escalation. In newer versions (v250 and later), the flaw causes systemd to assert and freeze, resulting in a Denial of Service (DoS).
A flaw was found in openssl. Applications that use RSASVE key encapsulation, a method for securely exchanging encryption keys, may inadvertently expose sensitive data. This vulnerability arises when an application processes a malicious, invalid RSA public key provided by an attacker without proper validation. Consequently, the application might send the contents of an uninitialized memory buffer, which could contain confidential information, to the attacker.
A flaw was found in gRPC-Go, the Go language implementation of gRPC. This vulnerability, an authorization bypass, is caused by improper input validation of the HTTP/2 `:path` pseudo-header. A remote attacker can exploit this by sending raw HTTP/2 frames with a malformed `:path` that omits the mandatory leading slash. This allows the attacker to bypass defined security policies, potentially leading to unauthorized access to services or information disclosure.
A flaw in GnuTLS DTLS handshake parsing allows malformed fragments with zero length and non-zero offset, leading to an integer underflow during reassembly and resulting in an out-of-bounds read. This issue is remotely exploitable and may cause information disclosure or denial of service.
A heap buffer overflow vulnerability exists in the DTLS handshake fragment reassembly logic of GnuTLS. The issue arises in merge_handshake_packet() where incoming handshake fragments are matched and merged based solely on handshake type, without validating that the message_length field remains consistent across all fragments of the same logical message. An attacker can exploit this by sending crafted DTLS fragments with conflicting message_length values, causing the implementation to allocate a buffer based on a smaller initial fragment and subsequently write beyond its bounds using larger, inconsistent fragments. Because the merge operation does not enforce proper bounds checking against the allocated buffer size, this results in an out-of-bounds write on the heap. The vulnerability is remotely exploitable without authentication via the DTLS handshake path and can lead to application crashes or potential memory corruption.
A flaw was found in OpenSSL. An integer truncation vulnerability in the ASN.1 decoder can occur when processing a crafted DER-encoded ASN.1 structure with a primitive element exceeding 2 gigabytes. A remote attacker could exploit this to cause a heap buffer over-read. This may lead to an application crash, resulting in a Denial of Service (DoS), or potentially disclose sensitive information by loading memory contents beyond the input buffer. This issue primarily affects 64-bit Unix and Unix-like platforms.
A flaw was found in OpenSSL. This vulnerability allows a remote attacker to forge PKCS#12 (Public-Key Cryptography Standards #12) files that use Password-Based Message Authentication Code 1 (PBMAC1) with short HMAC (Hash-based Message Authentication Code) keys. This can lead to a service accepting attacker-controlled certificates and private keys with a 1 in 256 probability, potentially enabling impersonation.
A flaw was found in OpenSSL's Cryptographic Message Services (CMS) AuthEnvelopedData processing. An on-path attacker can exploit insufficient input validation on cipher and tag length fields by sending specially crafted CMS messages. This can lead to the forging of messages or bypassing integrity validation. Consequently, an attacker may achieve key-equivalent functionality for a given CMS recipient.
A flaw was found in OpenSSL's QUIC PATH_CHALLENGE handler. A remote attacker can exploit this vulnerability by flooding a QUIC client or server with specially crafted PATH_CHALLENGE frames. This leads to unbounded memory allocation within the local QUIC stack, as the system continuously allocates PATH_RESPONSE frames without them being acknowledged. The primary consequence is a Denial of Service (DoS), causing the affected application to terminate abnormally due to memory exhaustion.
A flaw was found in Go JOSE, a library for handling JSON Web Encryption (JWE) objects. A remote attacker could exploit this vulnerability by providing a specially crafted JWE object. When decrypting such an object, if a key wrapping algorithm is specified but the encrypted key field is empty, the application can crash. This leads to a denial of service (DoS), making the affected service unavailable to legitimate users.
A flaw was found in golang.org/x/crypto/ssh. An authenticated SSH client can cause a Denial of Service (DoS) by repeatedly opening channels that are rejected by the server. This leads to unbounded memory growth, eventually crashing the server process and affecting all connected users.
A flaw was found in golang.org/x/crypto/ssh. A remote attacker could exploit this vulnerability when an SSH server authentication callback returned a PartialSuccessError with non-nil permissions. This flaw caused these permissions to be silently discarded, potentially bypassing certificate restrictions, such as a force-command, after a second authentication factor succeeded. This could lead to unauthorized command execution or access.
A flaw was found in golang.org/x/crypto/ssh. The RSA and DSA public key parsers in the affected component did not enforce size limits on key parameters. This vulnerability allows an unauthenticated client to provide a crafted public key with an excessively large modulus or DSA parameter during public key authentication. Successful exploitation could lead to a denial of service (DoS) due to prolonged CPU consumption during signature verification.
A flaw was found in golang.org/x/crypto/ssh. A remote malicious SSH peer can exploit this by sending unsolicited global request responses, which fills an internal buffer and blocks the connection's read loop. This prevents the associated resources from being released, leading to a resource leak per connection. The consequence is a Denial of Service (DoS) for the affected system.
A flaw was found in golang.org/x/crypto/ssh. The Verify() method, responsible for FIDO/U2F security key types, did not properly check for user presence. This allowed signatures to be accepted without requiring a physical touch on the hardware security key. As a result, an attacker could potentially use a hardware security key in an unattended manner, bypassing a critical security control designed to ensure user intent.
A flaw was found in golang.org/x/crypto/ssh/agent. When a key was added to a remote agent, security restrictions, known as constraint extensions, were not properly processed during the request. This allowed these restrictions to be silently removed when keys were forwarded, leading to the unrestricted use of the key on the remote host. This vulnerability could enable an attacker to bypass intended security controls and perform unauthorized actions.
A flaw was found in golang.org/x/crypto/ssh/agent. The NewKeyring() function, which creates an in-memory keyring, failed to enforce the ConfirmBeforeUse constraint on keys. This allowed keys configured to require user confirmation before use to perform signing operations without any prompt or indication to the user. Consequently, an attacker could potentially bypass intended security controls, leading to unauthorized cryptographic signing actions.
A flaw was found in golang.org/x/crypto/ssh. When a remote attacker attempts to write data larger than 4GB in a single call on an SSH (Secure Shell) channel, an integer overflow occurs in the internal payload size calculation. This vulnerability causes the write loop to spin indefinitely, continuously sending empty packets without making progress. The primary consequence is a denial of service (DoS), as the affected system consumes resources and prevents legitimate data transfer.
A flaw was found in golang.org/x/crypto/ssh. SSH servers configured to use CertChecker as a public key callback, without explicitly setting IsUserAuthority or IsHostAuthority, are vulnerable. A remote attacker can exploit this by presenting a specially crafted certificate, causing the server to panic and resulting in a Denial of Service (DoS).
A flaw was found in MIT Kerberos 5 (krb5). An unauthenticated remote attacker can exploit a NULL pointer dereference vulnerability by calling `gss_accept_sec_context()` on a system with a NegoEx mechanism registered. This can lead to the termination of the process, resulting in a Denial of Service (DoS).
A flaw was found in MIT Kerberos 5 (krb5). An unauthenticated remote attacker can exploit an integer underflow and an out-of-bounds read vulnerability by calling `gss_accept_sec_context()` on a system with a NegoEx mechanism registered. This can lead to the process terminating, resulting in a Denial of Service (DoS).
A flaw was found in Libgcrypt. A remote attacker could exploit this vulnerability by sending crafted Elliptic Curve Diffie-Hellman (ECDH) ciphertext to the `gcry_pk_decrypt` function. This can lead to a heap-based buffer overflow, potentially causing a denial of service (DoS) condition.
A flaw was found in gnutls. A remote attacker could exploit an issue in the Datagram Transport Layer Security (DTLS) packet reordering logic. The comparator function, responsible for ordering DTLS packets by sequence numbers, did not correctly handle packets with duplicate sequence numbers. This could lead to unstable packet ordering or undefined behavior, resulting in a denial of service.
A flaw was found in gnutls. Servers configured with RSA-PSK (Rivest–Shamir–Adleman – Pre-Shared Key) wrongfully matched usernames containing a NUL character with truncated usernames. A remote attacker could exploit this by sending a specially crafted username, leading to an authentication bypass. This vulnerability allows an attacker to gain unauthorized access by circumventing the authentication process.
A flaw was found in gnutls. This vulnerability occurs because permitted name constraints were incorrectly ignored when previous Certificate Authorities (CAs) only had excluded name constraints. A remote attacker could exploit this to bypass critical name constraint checks during certificate validation. This bypass could lead to the acceptance of invalid certificates, potentially enabling spoofing or man-in-the-middle attacks against affected systems.
A flaw was found in gnutls. A remote attacker could exploit this vulnerability by presenting a specially crafted certificate that contains Uniform Resource Identifier (URI) or Service (SRV) Subject Alternative Names (SANs). This could cause the certificate validation process to incorrectly fall back to checking DNS hostnames against the Common Name (CN), potentially allowing the attacker to spoof legitimate services or intercept sensitive information.
A flaw was found in gnutls. When validating certificates, an oversized Subject Alternative Name (SAN) could cause the validation process to incorrectly fall back to checking the Common Name (CN) field. This could allow a remote attacker to bypass proper certificate validation, potentially leading to spoofing or man-in-the-middle attacks.
A flaw was found in GnuTLS. The `gnutls_pkcs11_token_set_pin` function, used for changing the Security Officer PIN, can lead to a use-after-free vulnerability. This occurs when an attacker attempts to change the PIN with a NULL old PIN for a token that lacks a protected authentication path.
A flaw was found in gnutls. An off-by-one error exists in the PKCS#12 bag element bounds check. This vulnerability allows an remote attacker to write past the internal array of a PKCS#12 bag when appending to a bag that already contains 32 elements. This memory corruption could lead to a denial of service (DoS) or potentially other unspecified impacts.
A flaw was found in golang.org/x/net/html. This vulnerability allows an attacker to manipulate how HTML is processed and displayed. By providing specially crafted HTML, an attacker can cause an unexpected structure in the rendered output. This can lead to Cross-Site Scripting (XSS) attacks, where malicious scripts are executed in a user's web browser, potentially compromising user data or taking control of their session.
A flaw was found in golang.org/x/net/html. When parsing arbitrary HTML that is subsequently rendered, an unexpected HTML tree can be generated. A remote attacker could leverage this vulnerability to execute Cross-Site Scripting (XSS) attacks in applications that attempt to sanitize input HTML before rendering, potentially leading to unauthorized actions or information disclosure.
A flaw was found in golang.org/x/crypto/ssh/knownhosts. This vulnerability occurs because the system did not correctly check for the revocation status of a SignatureKey belonging to a Certificate Authority (CA). A remote attacker could potentially exploit this by presenting a revoked key, leading to the system accepting it as valid. This could allow an attacker to bypass security checks and potentially gain unauthorized access or spoof legitimate entities.
A flaw was found in the OpenSSL QUIC (Quick UDP Internet Connections) server. A remote attacker could send a specially crafted QUIC initial packet with an invalid token. If the server's address validation is explicitly disabled, this could lead to a NULL pointer dereference, causing the server process to terminate abnormally and resulting in a Denial of Service (DoS).
A flaw was found in OpenSSL. A remote attacker could exploit a NULL pointer dereference vulnerability in the Cryptographic Message Syntax (CMS) decryption process by providing a specially crafted password-encrypted CMS message. This occurs because the keyDerivationAlgorithm field, which is optional, is dereferenced without proper validation. Successful exploitation leads to an application crash, resulting in a Denial of Service.
A flaw was found in OpenSSL. An attacker controlling a Certificate Management Protocol (CMP) server, or acting as a man-in-the-middle, could craft a malicious CMP response. This response, containing a Certificate Request Message Format (CRMF) CertRepMessage with a specific malformed EncryptedValue structure, would trigger a NULL pointer dereference in the OpenSSL CMP client. This vulnerability leads to a crash of the application, resulting in a Denial of Service (DoS).
A flaw was found in OpenSSL's CMS_decrypt() and PKCS7_decrypt() functions. This vulnerability, a Bleichenbacher-style oracle, could allow a remote attacker to decrypt or sign messages using the victim's private RSA key. Exploitation requires the attacker to provide specially crafted CMS or S/MIME messages and observe the application's error codes or decryption output. While the attack is technically possible, the specific conditions required make it unlikely to be exploited in typical deployments.
A flaw was found in the Certificate Management Protocol (CMP) implementation within OpenSSL. An attacker with existing Registration Authority (RA) level credentials could exploit an error in the certificate verification process during a Root Certificate Authority (CA) key update. This vulnerability allows the attacker to replace the root CA certificate for CMP clients with a fraudulent one. The primary consequence is an escalation of privileges, enabling the attacker to gain control equivalent to the root CA.
A flaw was found in OpenSSL. A malicious peer can exploit this vulnerability by presenting a specially crafted DHX (X9.42) peer key. Due to improper validation of the peer key's subgroup membership, an attacker can recover the victim's private key after a small number of key exchange attempts. This information disclosure can lead to unauthorized access or further compromise of affected systems.
A flaw was found in OpenSSL. Applications that use the AES-OCB encryption method with a specific one-shot interface (EVP_Cipher()) will have their provided Initialization Vector (IV) silently discarded. This leads to the same internal cryptographic value being used repeatedly, which compromises the confidentiality of encrypted data. Additionally, this issue allows for the universal forgery of authentication tags, undermining the integrity of communications.
A flaw was found in OpenSSL. The implementations of AES-SIV (Advanced Encryption Standard - SIV) and AES-GCM-SIV (Advanced Encryption Standard - Galois/Counter Mode - SIV) incorrectly process authentication tags for empty messages. This vulnerability allows a remote attacker to forge empty messages with arbitrary Additional Authenticated Data (AAD) in applications that utilize these specific cipher modes within custom protocols and do not properly handle zero-length ciphertexts. This could lead to unauthorized data manipulation.
CWE-347 - Improper Verification of Cryptographic SignatureA flaw was found in OpenSSL. When processing a specially crafted PKCS#7 or S/MIME (Secure/Multipurpose Internet Mail Extensions) signed message, a heap use-after-free vulnerability in the PKCS7_verify() function can be triggered. This occurs if the SignedData digestAlgorithms field is present as an empty ASN.1 SET, leading to incorrect memory deallocation. A remote attacker could exploit this to cause application crashes, memory corruption, or potentially achieve remote code execution.
A flaw was found in golang.org/x/crypto/ssh. Source-address validation can be skipped when an SSH server configuration uses an authentication callback type other than public key, allowing authorization bypass in misconfigured servers. This is a follow-on to incomplete coverage from the CVE-2024-45337 fix.
A flaw was found in golang.org/x/crypto/ssh. A remote attacker could send specially crafted inputs to the AES-GCM packet decoder. This could lead to an incorrectly placed cast from bytes to an integer, causing a server-side panic and resulting in a Denial of Service (DoS) for the affected system.
A flaw was found in golang.org/x/crypto/ssh/agent. An attacker could provide specially crafted inputs that, when processed, lead to the creation of an ed25519.PrivateKey by casting malformed wire bytes. This improper input handling can cause the program to panic and crash, resulting in a Denial of Service (DoS) for the affected component.
A flaw was found in golang.org/x/net/dns/dnsmessage. A remote attacker could send a specially crafted Service Binding (SVCB) or HTTPS resource record (RR) to a system using this component. When parsing this invalid record, the system may panic due to a parameter value overflowing the message buffer. This can lead to a Denial of Service (DoS) condition, making the affected system unavailable.
A flaw was found in libsolv. This heap buffer overflow occurs during the decompression of attacker-controlled compressed data within `.solv` files due to insufficient input validation. An attacker can provide a specially crafted `.solv` file, which, when processed by a vulnerable application, can lead to out-of-bounds memory access. This could result in information disclosure, alteration of program execution, or a denial of service.
A flaw was found in the `acl` package, specifically within its `libacl` pathname-based functions. A local attacker could exploit this vulnerability by using a symbolic link to replace a pathname component. This could allow the attacker to redirect access control list (ACL) read or write operations to arbitrary files or directories, leading to unauthorized manipulation of ACLs and ultimately local privilege escalation.
A time-of-check to time-of-use (TOCTOU) race condition vulnerability was found in `acl`. By replacing a pathname component with a symbolic link between a security check and subsequent file operations, an attacker can redirect file access control list operations. This occurs when privileged processes invoke `getfacl` or `setfacl` over an attacker-controlled path, potentially leading to local privilege escalation.
A flaw was found in the `attr` package. This vulnerability allows a local attacker to perform a symlink traversal attack by replacing a pathname component with a symbolic link - either during directory hierarchy traversal by `getfattr` or during backup restoration by `setfattr`, which reads and resolves full pathnames from backup files. In both cases, when these utilities are executed by a privileged process over a path controlled by the attacker, this can lead to local privilege escalation.
A flaw was found in golang.org/x/crypto/ssh. The component failed to properly enforce source-address restrictions for several authentication methods, including password and keyboard-interactive callbacks. In applications that misuse the ServerConfig.PublicKeyCallback callback to make security relevant authorization decisions, an attacker with a valid key could bypass network-based access controls to gain additional privileges.
A flaw was found in golang.org/x/crypto/ssh. After a channel has been established, a remote malicious peer could send specially crafted messages. This could lead to a deadlock of the entire connection, resulting in a Denial of Service (DoS) for the affected system.
A flaw was found in GLib. An off-by-one error can occur in the gvs_tuple_is_normal function in the glib/gvariant-serialiser.c file when doing an alignment padding check because the bounds check uses > instead of >=, causing an out-of-bounds read of only 1 byte. This issue can cause a minor information disclosure of 1 byte and a denial of service when the out-of-bounds read crosses a page boundary.
A flaw was found in GLib. An out-of-bounds read of only 2 bytes can occur in the g_date_time_get_ymd function in the glib/gdatetime.c file when an invalid GDateTime object produced by the g_date_time_add_full function is processed. This flaw can corrupt the date output and potentially cause logic errors that may lead to a denial of service.
A flaw was found in GLib. A buffer over-read can occur in the g_regex_replace function when used with the `G_REGEX_RAW` compile flag and case-change replacement escapes because the string_append function processes matched substrings using UTF-8 functions that assume valid UTF-8 input, even when the string is treated as raw bytes. This vulnerability can cause a minor information disclosure of 1-5 bytes and a denial of service when the buffer over-read crosses a page boundary.
A flaw was found in GLib. A buffer over-read can occur in g_io_channel_read_line_backend() in the giochannel.c file when a custom line terminator with a length greater than one is set, causing memcmp to read past the GString buffer. This vulnerability can cause a minor information disclosure of 7 bytes or a denial of service when the buffer over-read crosses a page boundary.
A flaw was found in GLib. An off-by-one error can occur in the g_key_file_get_locale_string_list function in the gkeyfile.c file when loading a key file with an empty value. This flaw can cause an out-of-bounds access of 1 byte or a denial of service when the out-of-bounds access crosses a page boundary.
A flaw was found in GLib. The D-Bus client-side implementation of the DBUS_COOKIE_SHA1 SASL authentication mechanism does not validate the cookie_context parameter received from the server. A malicious D-Bus server can supply a cookie_context containing path traversal sequences, causing the client to read an arbitrary file and exfiltrate sensitive data by verifying guessed file contents against a generated hash.
A flaw was found in GLib. A state confusion issue exists in g_dbus_node_info_new_for_xml() in the gio/gdbusintrospection.c file when processing malformed D-Bus introspection XML, specifically with a `node` element nested within other elements like `method`, `signal`, `property` or `arg`. This issue can cause an unsigned integer overflow and lead to an out-of-bounds read, resulting in a denial of service.
A flaw in nghttp2's nghttpx proxy allows a remote attacker to perform HTTP request smuggling and cross-client response-queue poisoning. This occurs because the proxy ambiguously forwards HTTP/1.1 Upgrade requests that contain a Content-Length header to reusable keep-alive backend connections.
A flaw was found in golang.org/x/crypto/ssh. A malicious remote attacker could flood a channel's incoming requests before it is established, leading to a deadlock of the entire connection. This could result in a denial of service (DoS) for legitimate users.
A flaw was found in gRPC-Go. This vulnerability allows an unauthenticated remote attacker to exhaust process memory by sending millions of fragmented HTTP/2 DATA frames. Each fragmented frame is stored as a separate message, consuming disproportionate heap memory. This can lead to a runtime panic or out-of-memory termination, resulting in a Denial of Service (DoS).
A flaw was found in gRPC-Go. Servers created with xds.NewGRPCServer() can be exploited by a remote client sending a malformed RPC request that lacks the required :authority or Host headers. This can trigger an index-out-of-bounds panic, leading to the termination of the entire server process and a Denial of Service (DoS). In some deployments, this attack can be unauthenticated.
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Sightings
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.