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31 vulnerabilities found for libssh2 by libssh2
VAR-201903-0388
Vulnerability from variot - Updated: 2025-12-22 21:51An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server. libssh2 Contains an integer overflow vulnerability.Information is obtained and service operation is interrupted (DoS) There is a possibility of being put into a state. It can execute remote commands and file transfers, and at the same time provide a secure transmission channel for remote programs. An integer overflow vulnerability exists in libssh2. The vulnerability is caused by the '_libssh2_transport_read()' function not properly checking the packet_length value from the server. 6) - i386, x86_64
- -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256
====================================================================
Red Hat Security Advisory
Synopsis: Important: libssh2 security update Advisory ID: RHSA-2019:0679-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2019:0679 Issue date: 2019-03-28 CVE Names: CVE-2019-3855 CVE-2019-3856 CVE-2019-3857 CVE-2019-3863 ==================================================================== 1. Summary:
An update for libssh2 is now available for Red Hat Enterprise Linux 7.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
- Relevant releases/architectures:
Red Hat Enterprise Linux Client (v. 7) - x86_64 Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64 Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Server Optional (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch, x86_64 Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, ppc64le, s390x Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - aarch64, noarch, ppc64le, s390x
- Description:
The libssh2 packages provide a library that implements the SSH2 protocol.
- Solution:
For details on how to apply this update, which includes the changes described in this advisory, refer to:
https://access.redhat.com/articles/11258
After installing these updated packages, all running applications using libssh2 must be restarted for this update to take effect.
- Package List:
Red Hat Enterprise Linux Client (v. 7):
Source: libssh2-1.4.3-12.el7_6.2.src.rpm
x86_64: libssh2-1.4.3-12.el7_6.2.i686.rpm libssh2-1.4.3-12.el7_6.2.x86_64.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.i686.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
noarch: libssh2-docs-1.4.3-12.el7_6.2.noarch.rpm
x86_64: libssh2-debuginfo-1.4.3-12.el7_6.2.i686.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.x86_64.rpm libssh2-devel-1.4.3-12.el7_6.2.i686.rpm libssh2-devel-1.4.3-12.el7_6.2.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: libssh2-1.4.3-12.el7_6.2.src.rpm
x86_64: libssh2-1.4.3-12.el7_6.2.i686.rpm libssh2-1.4.3-12.el7_6.2.x86_64.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.i686.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
noarch: libssh2-docs-1.4.3-12.el7_6.2.noarch.rpm
x86_64: libssh2-debuginfo-1.4.3-12.el7_6.2.i686.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.x86_64.rpm libssh2-devel-1.4.3-12.el7_6.2.i686.rpm libssh2-devel-1.4.3-12.el7_6.2.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: libssh2-1.4.3-12.el7_6.2.src.rpm
ppc64: libssh2-1.4.3-12.el7_6.2.ppc.rpm libssh2-1.4.3-12.el7_6.2.ppc64.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.ppc.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.ppc64.rpm
ppc64le: libssh2-1.4.3-12.el7_6.2.ppc64le.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.ppc64le.rpm
s390x: libssh2-1.4.3-12.el7_6.2.s390.rpm libssh2-1.4.3-12.el7_6.2.s390x.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.s390.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.s390x.rpm
x86_64: libssh2-1.4.3-12.el7_6.2.i686.rpm libssh2-1.4.3-12.el7_6.2.x86_64.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.i686.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.x86_64.rpm
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7):
Source: libssh2-1.4.3-12.el7_6.2.src.rpm
aarch64: libssh2-1.4.3-12.el7_6.2.aarch64.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.aarch64.rpm
ppc64le: libssh2-1.4.3-12.el7_6.2.ppc64le.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.ppc64le.rpm
s390x: libssh2-1.4.3-12.el7_6.2.s390.rpm libssh2-1.4.3-12.el7_6.2.s390x.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.s390.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.s390x.rpm
Red Hat Enterprise Linux Server Optional (v. 7):
noarch: libssh2-docs-1.4.3-12.el7_6.2.noarch.rpm
ppc64: libssh2-debuginfo-1.4.3-12.el7_6.2.ppc.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.ppc64.rpm libssh2-devel-1.4.3-12.el7_6.2.ppc.rpm libssh2-devel-1.4.3-12.el7_6.2.ppc64.rpm
ppc64le: libssh2-debuginfo-1.4.3-12.el7_6.2.ppc64le.rpm libssh2-devel-1.4.3-12.el7_6.2.ppc64le.rpm
s390x: libssh2-debuginfo-1.4.3-12.el7_6.2.s390.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.s390x.rpm libssh2-devel-1.4.3-12.el7_6.2.s390.rpm libssh2-devel-1.4.3-12.el7_6.2.s390x.rpm
x86_64: libssh2-debuginfo-1.4.3-12.el7_6.2.i686.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.x86_64.rpm libssh2-devel-1.4.3-12.el7_6.2.i686.rpm libssh2-devel-1.4.3-12.el7_6.2.x86_64.rpm
Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7):
aarch64: libssh2-debuginfo-1.4.3-12.el7_6.2.aarch64.rpm libssh2-devel-1.4.3-12.el7_6.2.aarch64.rpm
noarch: libssh2-docs-1.4.3-12.el7_6.2.noarch.rpm
ppc64le: libssh2-debuginfo-1.4.3-12.el7_6.2.ppc64le.rpm libssh2-devel-1.4.3-12.el7_6.2.ppc64le.rpm
s390x: libssh2-debuginfo-1.4.3-12.el7_6.2.s390.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.s390x.rpm libssh2-devel-1.4.3-12.el7_6.2.s390.rpm libssh2-devel-1.4.3-12.el7_6.2.s390x.rpm
Red Hat Enterprise Linux Workstation (v. 7):
Source: libssh2-1.4.3-12.el7_6.2.src.rpm
x86_64: libssh2-1.4.3-12.el7_6.2.i686.rpm libssh2-1.4.3-12.el7_6.2.x86_64.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.i686.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.x86_64.rpm
Red Hat Enterprise Linux Workstation Optional (v. 7):
noarch: libssh2-docs-1.4.3-12.el7_6.2.noarch.rpm
x86_64: libssh2-debuginfo-1.4.3-12.el7_6.2.i686.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.x86_64.rpm libssh2-devel-1.4.3-12.el7_6.2.i686.rpm libssh2-devel-1.4.3-12.el7_6.2.x86_64.rpm
These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/
- References:
https://access.redhat.com/security/cve/CVE-2019-3855 https://access.redhat.com/security/cve/CVE-2019-3856 https://access.redhat.com/security/cve/CVE-2019-3857 https://access.redhat.com/security/cve/CVE-2019-3863 https://access.redhat.com/security/updates/classification/#important
- Contact:
The Red Hat security contact is secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/
Copyright 2019 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1
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-- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce . 7.3) - x86_64
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"data": "An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server. libssh2 Contains an integer overflow vulnerability.Information is obtained and service operation is interrupted (DoS) There is a possibility of being put into a state. It can execute remote commands and file transfers, and at the same time provide a secure transmission channel for remote programs. An integer overflow vulnerability exists in libssh2. The vulnerability is caused by the \u0027_libssh2_transport_read()\u0027 function not properly checking the packet_length value from the server. 6) - i386, x86_64\n\n3. -----BEGIN PGP SIGNED MESSAGE-----\nHash: SHA256\n\n==================================================================== \nRed Hat Security Advisory\n\nSynopsis: Important: libssh2 security update\nAdvisory ID: RHSA-2019:0679-01\nProduct: Red Hat Enterprise Linux\nAdvisory URL: https://access.redhat.com/errata/RHSA-2019:0679\nIssue date: 2019-03-28\nCVE Names: CVE-2019-3855 CVE-2019-3856 CVE-2019-3857\n CVE-2019-3863\n====================================================================\n1. Summary:\n\nAn update for libssh2 is now available for Red Hat Enterprise Linux 7. \n\nRed Hat Product Security has rated this update as having a security impact\nof Important. A Common Vulnerability Scoring System (CVSS) base score,\nwhich gives a detailed severity rating, is available for each vulnerability\nfrom the CVE link(s) in the References section. \n\n2. Relevant releases/architectures:\n\nRed Hat Enterprise Linux Client (v. 7) - x86_64\nRed Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64\nRed Hat Enterprise Linux ComputeNode (v. 7) - x86_64\nRed Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64\nRed Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64\nRed Hat Enterprise Linux Server Optional (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64\nRed Hat Enterprise Linux Workstation (v. 7) - x86_64\nRed Hat Enterprise Linux Workstation Optional (v. 7) - noarch, x86_64\nRed Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, ppc64le, s390x\nRed Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - aarch64, noarch, ppc64le, s390x\n\n3. Description:\n\nThe libssh2 packages provide a library that implements the SSH2 protocol. \n\n4. Solution:\n\nFor details on how to apply this update, which includes the changes\ndescribed in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258\n\nAfter installing these updated packages, all running applications using\nlibssh2 must be restarted for this update to take effect. \n\n5. Package List:\n\nRed Hat Enterprise Linux Client (v. 7):\n\nSource:\nlibssh2-1.4.3-12.el7_6.2.src.rpm\n\nx86_64:\nlibssh2-1.4.3-12.el7_6.2.i686.rpm\nlibssh2-1.4.3-12.el7_6.2.x86_64.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.i686.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.x86_64.rpm\n\nRed Hat Enterprise Linux Client Optional (v. 7):\n\nnoarch:\nlibssh2-docs-1.4.3-12.el7_6.2.noarch.rpm\n\nx86_64:\nlibssh2-debuginfo-1.4.3-12.el7_6.2.i686.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.x86_64.rpm\nlibssh2-devel-1.4.3-12.el7_6.2.i686.rpm\nlibssh2-devel-1.4.3-12.el7_6.2.x86_64.rpm\n\nRed Hat Enterprise Linux ComputeNode (v. 7):\n\nSource:\nlibssh2-1.4.3-12.el7_6.2.src.rpm\n\nx86_64:\nlibssh2-1.4.3-12.el7_6.2.i686.rpm\nlibssh2-1.4.3-12.el7_6.2.x86_64.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.i686.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.x86_64.rpm\n\nRed Hat Enterprise Linux ComputeNode Optional (v. 7):\n\nnoarch:\nlibssh2-docs-1.4.3-12.el7_6.2.noarch.rpm\n\nx86_64:\nlibssh2-debuginfo-1.4.3-12.el7_6.2.i686.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.x86_64.rpm\nlibssh2-devel-1.4.3-12.el7_6.2.i686.rpm\nlibssh2-devel-1.4.3-12.el7_6.2.x86_64.rpm\n\nRed Hat Enterprise Linux Server (v. 7):\n\nSource:\nlibssh2-1.4.3-12.el7_6.2.src.rpm\n\nppc64:\nlibssh2-1.4.3-12.el7_6.2.ppc.rpm\nlibssh2-1.4.3-12.el7_6.2.ppc64.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.ppc.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.ppc64.rpm\n\nppc64le:\nlibssh2-1.4.3-12.el7_6.2.ppc64le.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.ppc64le.rpm\n\ns390x:\nlibssh2-1.4.3-12.el7_6.2.s390.rpm\nlibssh2-1.4.3-12.el7_6.2.s390x.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.s390.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.s390x.rpm\n\nx86_64:\nlibssh2-1.4.3-12.el7_6.2.i686.rpm\nlibssh2-1.4.3-12.el7_6.2.x86_64.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.i686.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.x86_64.rpm\n\nRed Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7):\n\nSource:\nlibssh2-1.4.3-12.el7_6.2.src.rpm\n\naarch64:\nlibssh2-1.4.3-12.el7_6.2.aarch64.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.aarch64.rpm\n\nppc64le:\nlibssh2-1.4.3-12.el7_6.2.ppc64le.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.ppc64le.rpm\n\ns390x:\nlibssh2-1.4.3-12.el7_6.2.s390.rpm\nlibssh2-1.4.3-12.el7_6.2.s390x.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.s390.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.s390x.rpm\n\nRed Hat Enterprise Linux Server Optional (v. 7):\n\nnoarch:\nlibssh2-docs-1.4.3-12.el7_6.2.noarch.rpm\n\nppc64:\nlibssh2-debuginfo-1.4.3-12.el7_6.2.ppc.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.ppc64.rpm\nlibssh2-devel-1.4.3-12.el7_6.2.ppc.rpm\nlibssh2-devel-1.4.3-12.el7_6.2.ppc64.rpm\n\nppc64le:\nlibssh2-debuginfo-1.4.3-12.el7_6.2.ppc64le.rpm\nlibssh2-devel-1.4.3-12.el7_6.2.ppc64le.rpm\n\ns390x:\nlibssh2-debuginfo-1.4.3-12.el7_6.2.s390.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.s390x.rpm\nlibssh2-devel-1.4.3-12.el7_6.2.s390.rpm\nlibssh2-devel-1.4.3-12.el7_6.2.s390x.rpm\n\nx86_64:\nlibssh2-debuginfo-1.4.3-12.el7_6.2.i686.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.x86_64.rpm\nlibssh2-devel-1.4.3-12.el7_6.2.i686.rpm\nlibssh2-devel-1.4.3-12.el7_6.2.x86_64.rpm\n\nRed Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7):\n\naarch64:\nlibssh2-debuginfo-1.4.3-12.el7_6.2.aarch64.rpm\nlibssh2-devel-1.4.3-12.el7_6.2.aarch64.rpm\n\nnoarch:\nlibssh2-docs-1.4.3-12.el7_6.2.noarch.rpm\n\nppc64le:\nlibssh2-debuginfo-1.4.3-12.el7_6.2.ppc64le.rpm\nlibssh2-devel-1.4.3-12.el7_6.2.ppc64le.rpm\n\ns390x:\nlibssh2-debuginfo-1.4.3-12.el7_6.2.s390.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.s390x.rpm\nlibssh2-devel-1.4.3-12.el7_6.2.s390.rpm\nlibssh2-devel-1.4.3-12.el7_6.2.s390x.rpm\n\nRed Hat Enterprise Linux Workstation (v. 7):\n\nSource:\nlibssh2-1.4.3-12.el7_6.2.src.rpm\n\nx86_64:\nlibssh2-1.4.3-12.el7_6.2.i686.rpm\nlibssh2-1.4.3-12.el7_6.2.x86_64.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.i686.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.x86_64.rpm\n\nRed Hat Enterprise Linux Workstation Optional (v. 7):\n\nnoarch:\nlibssh2-docs-1.4.3-12.el7_6.2.noarch.rpm\n\nx86_64:\nlibssh2-debuginfo-1.4.3-12.el7_6.2.i686.rpm\nlibssh2-debuginfo-1.4.3-12.el7_6.2.x86_64.rpm\nlibssh2-devel-1.4.3-12.el7_6.2.i686.rpm\nlibssh2-devel-1.4.3-12.el7_6.2.x86_64.rpm\n\nThese packages are GPG signed by Red Hat for security. Our key and\ndetails on how to verify the signature are available from\nhttps://access.redhat.com/security/team/key/\n\n7. References:\n\nhttps://access.redhat.com/security/cve/CVE-2019-3855\nhttps://access.redhat.com/security/cve/CVE-2019-3856\nhttps://access.redhat.com/security/cve/CVE-2019-3857\nhttps://access.redhat.com/security/cve/CVE-2019-3863\nhttps://access.redhat.com/security/updates/classification/#important\n\n8. Contact:\n\nThe Red Hat security contact is \u003csecalert@redhat.com\u003e. More contact\ndetails at https://access.redhat.com/security/team/contact/\n\nCopyright 2019 Red Hat, Inc. \n-----BEGIN PGP SIGNATURE-----\nVersion: GnuPG v1\n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\ntLzz6XhldNU=R5e5\n-----END PGP SIGNATURE-----\n\n--\nRHSA-announce mailing list\nRHSA-announce@redhat.com\nhttps://www.redhat.com/mailman/listinfo/rhsa-announce\n. 7.3) - x86_64\n\n3",
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CVE-2023-48795 (GCVE-0-2023-48795)
Vulnerability from nvd – Published: 2023-12-18 00:00 – Updated: 2025-11-04 22:05
VLAI?
Summary
The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation message), and a client and server may consequently end up with a connection for which some security features have been downgraded or disabled, aka a Terrapin attack. This occurs because the SSH Binary Packet Protocol (BPP), implemented by these extensions, mishandles the handshake phase and mishandles use of sequence numbers. For example, there is an effective attack against SSH's use of ChaCha20-Poly1305 (and CBC with Encrypt-then-MAC). The bypass occurs in chacha20-poly1305@openssh.com and (if CBC is used) the -etm@openssh.com MAC algorithms. This also affects Maverick Synergy Java SSH API before 3.1.0-SNAPSHOT, Dropbear through 2022.83, Ssh before 5.1.1 in Erlang/OTP, PuTTY before 0.80, AsyncSSH before 2.14.2, golang.org/x/crypto before 0.17.0, libssh before 0.10.6, libssh2 through 1.11.0, Thorn Tech SFTP Gateway before 3.4.6, Tera Term before 5.1, Paramiko before 3.4.0, jsch before 0.2.15, SFTPGo before 2.5.6, Netgate pfSense Plus through 23.09.1, Netgate pfSense CE through 2.7.2, HPN-SSH through 18.2.0, ProFTPD before 1.3.8b (and before 1.3.9rc2), ORYX CycloneSSH before 2.3.4, NetSarang XShell 7 before Build 0144, CrushFTP before 10.6.0, ConnectBot SSH library before 2.2.22, Apache MINA sshd through 2.11.0, sshj through 0.37.0, TinySSH through 20230101, trilead-ssh2 6401, LANCOM LCOS and LANconfig, FileZilla before 3.66.4, Nova before 11.8, PKIX-SSH before 14.4, SecureCRT before 9.4.3, Transmit5 before 5.10.4, Win32-OpenSSH before 9.5.0.0p1-Beta, WinSCP before 6.2.2, Bitvise SSH Server before 9.32, Bitvise SSH Client before 9.33, KiTTY through 0.76.1.13, the net-ssh gem 7.2.0 for Ruby, the mscdex ssh2 module before 1.15.0 for Node.js, the thrussh library before 0.35.1 for Rust, and the Russh crate before 0.40.2 for Rust.
Severity ?
5.9 (Medium)
CWE
- n/a
Assigner
References
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{
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CVE-2020-22218 (GCVE-0-2020-22218)
Vulnerability from nvd – Published: 2023-08-22 00:00 – Updated: 2024-10-03 18:09
VLAI?
Summary
An issue was discovered in function _libssh2_packet_add in libssh2 1.10.0 allows attackers to access out of bounds memory.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
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CVE-2019-17498 (GCVE-0-2019-17498)
Vulnerability from nvd – Published: 2019-10-21 00:00 – Updated: 2024-08-05 01:40
VLAI?
Summary
In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||
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CVE-2019-13115 (GCVE-0-2019-13115)
Vulnerability from nvd – Published: 2019-07-16 00:00 – Updated: 2024-08-04 23:41
VLAI?
Summary
In libssh2 before 1.9.0, kex_method_diffie_hellman_group_exchange_sha256_key_exchange in kex.c has an integer overflow that could lead to an out-of-bounds read in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server. This is related to an _libssh2_check_length mistake, and is different from the various issues fixed in 1.8.1, such as CVE-2019-3855.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||||||||||||||
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CVE-2019-3861 (GCVE-0-2019-3861)
Vulnerability from nvd – Published: 2019-03-25 18:30 – Updated: 2024-08-04 19:19
VLAI?
Summary
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SSH packets with a padding length value greater than the packet length are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
Severity ?
5 (Medium)
CWE
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Affected:
1.8.1
|
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CVE-2019-3860 (GCVE-0-2019-3860)
Vulnerability from nvd – Published: 2019-03-25 18:30 – Updated: 2024-08-04 19:19
VLAI?
Summary
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SFTP packets with empty payloads are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
Severity ?
5 (Medium)
CWE
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Affected:
1.8.1
|
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CVE-2019-3857 (GCVE-0-2019-3857)
Vulnerability from nvd – Published: 2019-03-25 18:30 – Updated: 2025-04-23 19:48
VLAI?
Summary
An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way SSH_MSG_CHANNEL_REQUEST packets with an exit signal are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.
Severity ?
7.5 (High)
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Affected:
1.8.1
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CVE-2019-3856 (GCVE-0-2019-3856)
Vulnerability from nvd – Published: 2019-03-25 18:31 – Updated: 2025-04-23 19:48
VLAI?
Summary
An integer overflow flaw, which could lead to an out of bounds write, was discovered in libssh2 before 1.8.1 in the way keyboard prompt requests are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.
Severity ?
7.5 (High)
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Affected:
1.8.1
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CVE-2019-3863 (GCVE-0-2019-3863)
Vulnerability from nvd – Published: 2019-03-25 17:52 – Updated: 2025-12-19 03:02
VLAI?
Summary
A flaw was found in libssh2 before 1.8.1 creating a vulnerability on the SSH client side. A server could send a multiple keyboard interactive response messages whose total length are greater than unsigned char max characters. This value is used by the SSH client as an index to copy memory causing in an out of bounds memory write error.
Severity ?
7.5 (High)
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Affected:
1.8.1
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CVE-2019-3858 (GCVE-0-2019-3858)
Vulnerability from nvd – Published: 2019-03-21 20:22 – Updated: 2024-08-04 19:19
VLAI?
Summary
An out of bounds read flaw was discovered in libssh2 before 1.8.1 when a specially crafted SFTP packet is received from the server. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
Severity ?
5 (Medium)
CWE
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Affected:
1.8.1
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CVE-2019-3855 (GCVE-0-2019-3855)
Vulnerability from nvd – Published: 2019-03-21 20:13 – Updated: 2025-12-17 21:40
VLAI?
Summary
An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.
Severity ?
7.5 (High)
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Affected:
1.8.1
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CVE-2019-3862 (GCVE-0-2019-3862)
Vulnerability from nvd – Published: 2019-03-20 21:39 – Updated: 2024-08-04 19:19
VLAI?
Summary
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SSH_MSG_CHANNEL_REQUEST packets with an exit status message and no payload are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
Severity ?
7.3 (High)
CWE
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Affected:
1.8.1
|
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CVE-2019-3859 (GCVE-0-2019-3859)
Vulnerability from nvd – Published: 2019-03-20 21:18 – Updated: 2025-12-18 11:43
VLAI?
Summary
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the _libssh2_packet_require and _libssh2_packet_requirev functions. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
Severity ?
5 (Medium)
CWE
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Affected:
1.8.1
|
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CVE-2016-0787 (GCVE-0-2016-0787)
Vulnerability from nvd – Published: 2016-04-13 17:00 – Updated: 2024-08-05 22:30
VLAI?
Summary
The diffie_hellman_sha256 function in kex.c in libssh2 before 1.7.0 improperly truncates secrets to 128 or 256 bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a "bits/bytes confusion bug."
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
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CVE-2015-1782 (GCVE-0-2015-1782)
Vulnerability from nvd – Published: 2015-03-13 14:00 – Updated: 2024-08-06 04:54
VLAI?
Summary
The kex_agree_methods function in libssh2 before 1.5.0 allows remote servers to cause a denial of service (crash) or have other unspecified impact via crafted length values in an SSH_MSG_KEXINIT packet.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
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CVE-2023-48795 (GCVE-0-2023-48795)
Vulnerability from cvelistv5 – Published: 2023-12-18 00:00 – Updated: 2025-11-04 22:05
VLAI?
Summary
The SSH transport protocol with certain OpenSSH extensions, found in OpenSSH before 9.6 and other products, allows remote attackers to bypass integrity checks such that some packets are omitted (from the extension negotiation message), and a client and server may consequently end up with a connection for which some security features have been downgraded or disabled, aka a Terrapin attack. This occurs because the SSH Binary Packet Protocol (BPP), implemented by these extensions, mishandles the handshake phase and mishandles use of sequence numbers. For example, there is an effective attack against SSH's use of ChaCha20-Poly1305 (and CBC with Encrypt-then-MAC). The bypass occurs in chacha20-poly1305@openssh.com and (if CBC is used) the -etm@openssh.com MAC algorithms. This also affects Maverick Synergy Java SSH API before 3.1.0-SNAPSHOT, Dropbear through 2022.83, Ssh before 5.1.1 in Erlang/OTP, PuTTY before 0.80, AsyncSSH before 2.14.2, golang.org/x/crypto before 0.17.0, libssh before 0.10.6, libssh2 through 1.11.0, Thorn Tech SFTP Gateway before 3.4.6, Tera Term before 5.1, Paramiko before 3.4.0, jsch before 0.2.15, SFTPGo before 2.5.6, Netgate pfSense Plus through 23.09.1, Netgate pfSense CE through 2.7.2, HPN-SSH through 18.2.0, ProFTPD before 1.3.8b (and before 1.3.9rc2), ORYX CycloneSSH before 2.3.4, NetSarang XShell 7 before Build 0144, CrushFTP before 10.6.0, ConnectBot SSH library before 2.2.22, Apache MINA sshd through 2.11.0, sshj through 0.37.0, TinySSH through 20230101, trilead-ssh2 6401, LANCOM LCOS and LANconfig, FileZilla before 3.66.4, Nova before 11.8, PKIX-SSH before 14.4, SecureCRT before 9.4.3, Transmit5 before 5.10.4, Win32-OpenSSH before 9.5.0.0p1-Beta, WinSCP before 6.2.2, Bitvise SSH Server before 9.32, Bitvise SSH Client before 9.33, KiTTY through 0.76.1.13, the net-ssh gem 7.2.0 for Ruby, the mscdex ssh2 module before 1.15.0 for Node.js, the thrussh library before 0.35.1 for Rust, and the Russh crate before 0.40.2 for Rust.
Severity ?
5.9 (Medium)
CWE
- n/a
Assigner
References
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CVE-2020-22218 (GCVE-0-2020-22218)
Vulnerability from cvelistv5 – Published: 2023-08-22 00:00 – Updated: 2024-10-03 18:09
VLAI?
Summary
An issue was discovered in function _libssh2_packet_add in libssh2 1.10.0 allows attackers to access out of bounds memory.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
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CVE-2019-17498 (GCVE-0-2019-17498)
Vulnerability from cvelistv5 – Published: 2019-10-21 00:00 – Updated: 2024-08-05 01:40
VLAI?
Summary
In libssh2 v1.9.0 and earlier versions, the SSH_MSG_DISCONNECT logic in packet.c has an integer overflow in a bounds check, enabling an attacker to specify an arbitrary (out-of-bounds) offset for a subsequent memory read. A crafted SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||
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|
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CVE-2019-13115 (GCVE-0-2019-13115)
Vulnerability from cvelistv5 – Published: 2019-07-16 00:00 – Updated: 2024-08-04 23:41
VLAI?
Summary
In libssh2 before 1.9.0, kex_method_diffie_hellman_group_exchange_sha256_key_exchange in kex.c has an integer overflow that could lead to an out-of-bounds read in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to disclose sensitive information or cause a denial of service condition on the client system when a user connects to the server. This is related to an _libssh2_check_length mistake, and is different from the various issues fixed in 1.8.1, such as CVE-2019-3855.
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||||||||||||||
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CVE-2019-3856 (GCVE-0-2019-3856)
Vulnerability from cvelistv5 – Published: 2019-03-25 18:31 – Updated: 2025-04-23 19:48
VLAI?
Summary
An integer overflow flaw, which could lead to an out of bounds write, was discovered in libssh2 before 1.8.1 in the way keyboard prompt requests are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.
Severity ?
7.5 (High)
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Affected:
1.8.1
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CVE-2019-3857 (GCVE-0-2019-3857)
Vulnerability from cvelistv5 – Published: 2019-03-25 18:30 – Updated: 2025-04-23 19:48
VLAI?
Summary
An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way SSH_MSG_CHANNEL_REQUEST packets with an exit signal are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.
Severity ?
7.5 (High)
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Affected:
1.8.1
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CVE-2019-3860 (GCVE-0-2019-3860)
Vulnerability from cvelistv5 – Published: 2019-03-25 18:30 – Updated: 2024-08-04 19:19
VLAI?
Summary
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SFTP packets with empty payloads are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
Severity ?
5 (Medium)
CWE
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Affected:
1.8.1
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CVE-2019-3861 (GCVE-0-2019-3861)
Vulnerability from cvelistv5 – Published: 2019-03-25 18:30 – Updated: 2024-08-04 19:19
VLAI?
Summary
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SSH packets with a padding length value greater than the packet length are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
Severity ?
5 (Medium)
CWE
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Affected:
1.8.1
|
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CVE-2019-3863 (GCVE-0-2019-3863)
Vulnerability from cvelistv5 – Published: 2019-03-25 17:52 – Updated: 2025-12-19 03:02
VLAI?
Summary
A flaw was found in libssh2 before 1.8.1 creating a vulnerability on the SSH client side. A server could send a multiple keyboard interactive response messages whose total length are greater than unsigned char max characters. This value is used by the SSH client as an index to copy memory causing in an out of bounds memory write error.
Severity ?
7.5 (High)
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Affected:
1.8.1
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CVE-2019-3858 (GCVE-0-2019-3858)
Vulnerability from cvelistv5 – Published: 2019-03-21 20:22 – Updated: 2024-08-04 19:19
VLAI?
Summary
An out of bounds read flaw was discovered in libssh2 before 1.8.1 when a specially crafted SFTP packet is received from the server. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
Severity ?
5 (Medium)
CWE
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Affected:
1.8.1
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CVE-2019-3855 (GCVE-0-2019-3855)
Vulnerability from cvelistv5 – Published: 2019-03-21 20:13 – Updated: 2025-12-17 21:40
VLAI?
Summary
An integer overflow flaw which could lead to an out of bounds write was discovered in libssh2 before 1.8.1 in the way packets are read from the server. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.
Severity ?
7.5 (High)
Assigner
References
| URL | Tags | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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|
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Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Affected:
1.8.1
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CVE-2019-3862 (GCVE-0-2019-3862)
Vulnerability from cvelistv5 – Published: 2019-03-20 21:39 – Updated: 2024-08-04 19:19
VLAI?
Summary
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SSH_MSG_CHANNEL_REQUEST packets with an exit status message and no payload are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
Severity ?
7.3 (High)
CWE
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Affected:
1.8.1
|
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CVE-2019-3859 (GCVE-0-2019-3859)
Vulnerability from cvelistv5 – Published: 2019-03-20 21:18 – Updated: 2025-12-18 11:43
VLAI?
Summary
An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the _libssh2_packet_require and _libssh2_packet_requirev functions. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
Severity ?
5 (Medium)
CWE
Assigner
References
| URL | Tags | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| The libssh2 Project | libssh2 |
Affected:
1.8.1
|
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CVE-2016-0787 (GCVE-0-2016-0787)
Vulnerability from cvelistv5 – Published: 2016-04-13 17:00 – Updated: 2024-08-05 22:30
VLAI?
Summary
The diffie_hellman_sha256 function in kex.c in libssh2 before 1.7.0 improperly truncates secrets to 128 or 256 bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a "bits/bytes confusion bug."
Severity ?
No CVSS data available.
CWE
- n/a
Assigner
References
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