Common Weakness Enumeration
CWE-295
AllowedImproper Certificate Validation
Abstraction: Base · Status: Draft
The product does not validate, or incorrectly validates, a certificate.
2045 vulnerabilities reference this CWE, most recent first.
CVE-2020-3155 (GCVE-0-2020-3155)
Vulnerability from cvelistv5 – Published: 2020-03-04 18:40 – Updated: 2024-11-15 17:35
VLAI
EPSS
VEX
Title
Cisco Intelligent Proximity SSL Certificate Validation Vulnerability
Summary
A vulnerability in the SSL implementation of the Cisco Intelligent Proximity solution could allow an unauthenticated, remote attacker to view or alter information shared on Cisco Webex video devices and Cisco collaboration endpoints if the products meet the conditions described in the Vulnerable Products section. The vulnerability is due to a lack of validation of the SSL server certificate received when establishing a connection to a Cisco Webex video device or a Cisco collaboration endpoint. An attacker could exploit this vulnerability by using man in the middle (MITM) techniques to intercept the traffic between the affected client and an endpoint, and then using a forged certificate to impersonate the endpoint. Depending on the configuration of the endpoint, an exploit could allow the attacker to view presentation content shared on it, modify any content being presented by the victim, or have access to call controls. This vulnerability does not affect cloud registered collaboration endpoints.
Severity
7.4 (High)
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-15 16:24 UTC
CWE
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://tools.cisco.com/security/center/content/C… | vendor-advisoryx_refsource_CISCO |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Cisco | Cisco Jabber IM for Android |
Affected:
unspecified , < n/a
(custom)
|
Date Public
2020-03-04 00:00
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CVE-2020-2033 (GCVE-0-2020-2033)
Vulnerability from cvelistv5 – Published: 2020-06-10 17:29 – Updated: 2024-09-17 03:22
VLAI
EPSS
VEX
Title
GlobalProtect App: Missing certificate validation vulnerability can disclose pre-logon authentication cookie
Summary
When the pre-logon feature is enabled, a missing certification validation in Palo Alto Networks GlobalProtect app can disclose the pre-logon authentication cookie to a man-in-the-middle attacker on the same local area network segment with the ability to manipulate ARP or to conduct ARP spoofing attacks. This allows the attacker to access the GlobalProtect Server as allowed by configured Security rules for the 'pre-login' user. This access may be limited compared to the network access of regular users. This issue affects: GlobalProtect app 5.0 versions earlier than GlobalProtect app 5.0.10 when the prelogon feature is enabled; GlobalProtect app 5.1 versions earlier than GlobalProtect app 5.1.4 when the prelogon feature is enabled.
Severity
5.3 (Medium)
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://security.paloaltonetworks.com/CVE-2020-2033 | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Palo Alto Networks | GlobalProtect App |
Affected:
5.1 , < 5.1.4
(custom)
Affected: 5.0 , < 5.0.10 (custom) |
Date Public
2020-06-10 00:00
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CVE-2019-1010275 (GCVE-0-2019-1010275)
Vulnerability from cvelistv5 – Published: 2019-07-17 20:14 – Updated: 2024-08-05 03:07
VLAI
EPSS
VEX
Summary
helm Before 2.7.2 is affected by: CWE-295: Improper Certificate Validation. The impact is: Unauthorized clients could connect to the server because self-signed client certs were aloowed. The component is: helm (many files updated, see https://github.com/helm/helm/pull/3152/files/1096813bf9a425e2aa4ac755b6c991b626dfab50). The attack vector is: A malicious client could connect to the server over the network. The fixed version is: 2.7.2.
Severity
No CVSS data available.
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/helm/helm/releases/tag/v2.7.2 | x_refsource_MISC |
| https://github.com/helm/helm/pull/3152 | x_refsource_MISC |
| https://github.com/helm/helm/pull/3152/files/1096… | x_refsource_MISC |
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CVE-2019-25652 (GCVE-0-2019-25652)
Vulnerability from cvelistv5 – Published: 2026-03-27 21:19 – Updated: 2026-07-15 01:24
VLAI
EPSS
VEX
Title
UniFi Network Controller Improper Certificate Validation Leading to Credential Theft via MITM
Summary
UniFi Network Controller before version 5.10.22 and 5.11.x before 5.11.18 contains an improper certificate verification vulnerability that allows adjacent network attackers to conduct man-in-the-middle attacks by presenting a false SSL certificate during SMTP connections. Attackers can intercept SMTP traffic and obtain credentials by exploiting the insecure SSL host verification mechanism in the SMTP certificate validation process.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-03-30 13:56 UTC
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://community.ui.com/releases/Security-Adviso… | vendor-advisory |
| https://www.vulncheck.com/advisories/unifi-networ… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Ubiquiti | UniFi Network Controller |
Affected:
0 , < 5.6.42
(semver)
Affected: 5.6.43 , < 5.10.22 (semver) Affected: 5.11 , < 5.11.18 (custom) cpe:2.3:a:ui:unifi_network_controller:*:*:*:*:*:*:*:* cpe:2.3:a:ui:unifi_network_controller:*:*:*:*:*:*:*:* cpe:2.3:a:ui:unifi_network_controller:*:*:*:*:*:*:*:* |
Date Public
2019-05-15 00:00
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CVE-2019-15604 (GCVE-0-2019-15604)
Vulnerability from cvelistv5 – Published: 2020-02-07 14:57 – Updated: 2025-04-30 22:24
VLAI
EPSS
VEX
Summary
Improper Certificate Validation in Node.js 10, 12, and 13 causes the process to abort when sending a crafted X.509 certificate
Severity
No CVSS data available.
CWE
- CWE-295 - Improper Certificate Validation (CWE-295)
Assigner
References
16 references
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| NodeJS | Node |
Affected:
4.0 , < 4.*
(semver)
Affected: 5.0 , < 5.* (semver) Affected: 6.0 , < 6.* (semver) Affected: 7.0 , < 7.* (semver) Affected: 8.0 , < 8.* (semver) Affected: 9.0 , < 9.* (semver) Affected: 10.0 , < 10.19.0 (semver) Affected: 11.0 , < 11.* (semver) Affected: 12.0 , < 12.15.0 (semver) Affected: 13.0 , < 13.8.0 (semver) |
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CVE-2019-7615 (GCVE-0-2019-7615)
Vulnerability from cvelistv5 – Published: 2019-07-30 21:15 – Updated: 2024-08-04 20:54
VLAI
EPSS
VEX
Summary
A TLS certificate validation flaw was found in Elastic APM agent for Ruby versions before 2.9.0. When specifying a trusted server CA certificate via the 'server_ca_cert' setting, the Ruby agent would not properly verify the certificate returned by the APM server. This could result in a man in the middle style attack against the Ruby agent.
Severity
No CVSS data available.
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://www.elastic.co/community/security/ | x_refsource_MISC |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| Elastic | Elastic APM agent for Ruby |
Affected:
before 2.9.0
|
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CVE-2019-5102 (GCVE-0-2019-5102)
Vulnerability from cvelistv5 – Published: 2019-11-18 17:59 – Updated: 2024-08-04 19:47
VLAI
EPSS
VEX
Summary
An exploitable information leak vulnerability exists in the ustream-ssl library of OpenWrt, versions 18.06.4 and 15.05.1. When connecting to a remote server, the server's SSL certificate is checked but no action is taken when the certificate is invalid. An attacker could exploit this behavior by performing a man-in-the-middle attack, providing any certificate, leading to the theft of all the data sent by the client during the first request.An exploitable information leak vulnerability exists in the ustream-ssl library of OpenWrt, versions 18.06.4 and 15.05.1. When connecting to a remote server, the server's SSL certificate is checked but no action is taken when the certificate is invalid. An attacker could exploit this behavior by performing a man-in-the-middle attack, providing any certificate, leading to the theft of all the data sent by the client during the first request.
Severity
4 (Medium)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
Impacted products
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CVE-2019-5101 (GCVE-0-2019-5101)
Vulnerability from cvelistv5 – Published: 2019-11-18 17:59 – Updated: 2024-08-04 19:47
VLAI
EPSS
VEX
Summary
An exploitable information leak vulnerability exists in the ustream-ssl library of OpenWrt, versions 18.06.4 and 15.05.1. When connecting to a remote server, the server's SSL certificate is checked but no action is taken when the certificate is invalid. An attacker could exploit this behavior by performing a man-in-the-middle attack, providing any certificate, leading to the theft of all the data sent by the client during the first request.An exploitable information leak vulnerability exists in the ustream-ssl library of OpenWrt, versions 18.06.4 and 15.05.1. When connecting to a remote server, the server's SSL certificate is checked but no action is taken when the certificate is invalid. An attacker could exploit this behavior by performing a man-in-the-middle attack, providing any certificate, leading to the theft of all the data sent by the client during the first request. After an SSL connection is initialized via _ustream_ssl_init, and after any data (e.g. the client's HTTP request) is written to the stream using ustream_printf, the code eventually enters the function _ustream_ssl_poll, which is used to dispatch the read/write events
Severity
4 (Medium)
CWE
- CWE-295 - Improper Certificate Validation
Assigner
References
1 reference
Impacted products
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CVE-2019-3890 (GCVE-0-2019-3890)
Vulnerability from cvelistv5 – Published: 2019-08-01 13:22 – Updated: 2024-08-04 19:19
VLAI
EPSS
VEX
Summary
It was discovered evolution-ews before 3.31.3 does not check the validity of SSL certificates. An attacker could abuse this flaw to get confidential information by tricking the user into connecting to a fake server without the user noticing the difference.
Severity
8.1 (High)
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| https://gitlab.gnome.org/GNOME/evolution-ews/issues/27 | x_refsource_CONFIRM |
| https://access.redhat.com/errata/RHSA-2019:3699 | vendor-advisoryx_refsource_REDHAT |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| The Gnome Project | evolution-ews |
Affected:
3.31.3
|
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CVE-2019-3875 (GCVE-0-2019-3875)
Vulnerability from cvelistv5 – Published: 2019-06-12 13:51 – Updated: 2024-08-04 19:19
VLAI
EPSS
VEX
Summary
A vulnerability was found in keycloak before 6.0.2. The X.509 authenticator supports the verification of client certificates through the CRL, where the CRL list can be obtained from the URL provided in the certificate itself (CDP) or through the separately configured path. The CRL are often available over the network through unsecured protocols ('http' or 'ldap') and hence the caller should verify the signature and possibly the certification path. Keycloak currently doesn't validate signatures on CRL, which can result in a possibility of various attacks like man-in-the-middle.
Severity
6.5 (Medium)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2… | x_refsource_CONFIRM |
| http://www.securityfocus.com/bid/108748 | vdb-entryx_refsource_BID |
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Mitigation
Architecture and Design
Implementation
Certificates should be carefully managed and checked to assure that data are encrypted with the intended owner's public key.
Mitigation
Implementation
If certificate pinning is being used, ensure that all relevant properties of the certificate are fully validated before the certificate is pinned, including the hostname.
CAPEC-459: Creating a Rogue Certification Authority Certificate
An adversary exploits a weakness resulting from using a hashing algorithm with weak collision resistance to generate certificate signing requests (CSR) that contain collision blocks in their "to be signed" parts. The adversary submits one CSR to be signed by a trusted certificate authority then uses the signed blob to make a second certificate appear signed by said certificate authority. Due to the hash collision, both certificates, though different, hash to the same value and so the signed blob works just as well in the second certificate. The net effect is that the adversary's second X.509 certificate, which the Certification Authority has never seen, is now signed and validated by that Certification Authority.
CAPEC-475: Signature Spoofing by Improper Validation
An adversary exploits a cryptographic weakness in the signature verification algorithm implementation to generate a valid signature without knowing the key.