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VCID-97nz-s1q6-x3fc
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Out-of-bounds Read
An out-of-bounds read flaw was discovered in libssh2 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.
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CVE-2019-3861
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VCID-bcba-qntz-gkez
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Out-of-bounds Write
A flaw was found in libssh2 A server could send a multiple keyboard interactive response messages whose total length are greater than unsigned char max characters. This value is used as an index to copy memory causing in an out-of-bounds memory write error.
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CVE-2019-3863
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VCID-chdt-29cx-dyas
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Improper Input Validation
The kex_agree_methods function in libssh2 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.
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CVE-2015-1782
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VCID-cmy6-8sjv-n3h1
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Exposure of Sensitive Information to an Unauthorized Actor
The diffie_hellman_sha256 function in kex.c in libssh2 improperly truncates secrets to 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."
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CVE-2016-0787
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VCID-f1me-9vqd-j7f6
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Out-of-bounds Write
An integer overflow flaw which could lead to an out-of-bounds write was discovered in libssh2 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.
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CVE-2019-3855
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VCID-grd5-zwxv-cqfw
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libssh2: integer overflow in SSH_MSG_DISCONNECT logic in packet.c
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CVE-2019-17498
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VCID-gv2u-298u-jkcv
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Out-of-bounds Read
An out-of-bounds read flaw was discovered in libssh2 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.
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CVE-2019-3859
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VCID-jp7j-dwbq-zkgk
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libssh2: integer overflow in kex_method_diffie_hellman_group_exchange_sha256_key_exchange in kex.c leads to out-of-bounds write
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CVE-2019-13115
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VCID-jzn6-bzzf-nugp
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Improper Validation of Integrity Check Value
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.
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CVE-2023-48795
GHSA-45x7-px36-x8w8
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VCID-k1js-k8q3-ekb2
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Out-of-bounds Read
An out-of-bounds read flaw was discovered in libssh2 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.
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CVE-2019-3860
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VCID-mevw-g6yq-eqa8
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Out-of-bounds Write
An integer overflow flaw which could lead to an out-of-bounds write was discovered in libssh2 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.
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CVE-2019-3857
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VCID-qjzc-2hvn-2qg3
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Out-of-bounds Write
An integer overflow flaw, which could lead to an out-of-bounds write, was discovered in libssh2 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.
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CVE-2019-3856
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VCID-rv81-jwkz-w7b5
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Out-of-bounds Read
An out-of-bounds read flaw was discovered in libssh2 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.
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CVE-2019-3858
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VCID-sy5b-nfqk-6ucm
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Out-of-bounds Read
An out-of-bounds read flaw was discovered in libssh2 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.
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CVE-2019-3862
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VCID-wka6-6yn3-ubb1
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libssh2: use-of-uninitialized-value in _libssh2_transport_read
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CVE-2020-22218
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