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ssh-add in OpenSSH before 9.3 adds smartcard keys to ssh-agent without the intended per-hop destination constraints. The earliest affected version is 8.9.

The host is installed with Apache SSHD through 2.11.0, PuTTY before 0.80, WinSCP before 6.2.2, SecureCRT before 9.4.3, FileZilla before 3.66.4, OpenSSH before 9.6, Oracle Database Server 19c, or 21c and is prone to a security bypass vulnerability. A flaw is present in the application, which fails to properly handle issues in the SSH Binary Packet Protocol. Successful exploitation allows remote att ...

openssh: secure shell for secure access to remote machines Several security issues were fixed in OpenSSH.

libssh: A tiny C SSH library A security issue was fixed in libssh.

openssh: secure shell for secure access to remote machines Several security issues were fixed in OpenSSH.

Several vulnerabilities have been discovered in OpenSSH, an implementation of the SSH protocol suite. CVE-2021-41617 It was discovered that sshd failed to correctly initialise supplemental groups when executing an AuthorizedKeysCommand or AuthorizedPrincipalsCommand, where a AuthorizedKeysCommandUser or AuthorizedPrincipalsCommandUser directive has been set to run the command as a different user. ...

Fabian Baeumer, Marcus Brinkmann and Joerg Schwenk discovered that the SSH protocol is prone to a prefix truncation attack, known as the Terrapin attack. This attack allows a MITM attacker to effect a limited break of the integrity of the early encrypted SSH transport protocol by sending extra messages prior to the commencement of encryption, and deleting an equal number of consecutive messages im ...

Several vulnerabilities were discovered in libssh, a tiny C SSH library. CVE-2023-6004 It was reported that using the ProxyCommand or the ProxyJump feature may allow an attacker to inject malicious code through specially crafted hostnames. CVE-2023-6918 Jack Weinstein reported that missing checks for return values for digests may result in denial of service or usage of uninitialized memory. CVE-2 ...

Fabian Baeumer, Marcus Brinkmann and Joerg Schwenk discovered that the SSH protocol is prone to a prefix truncation attack, known as the Terrapin attack. This attack allows a MITM attacker to effect a limited break of the integrity of the early encrypted SSH transport protocol by sending extra messages prior to the commencement of encryption, and deleting an equal number of consecutive messages im ...

Fabian Baeumer, Marcus Brinkmann and Joerg Schwenk discovered that the SSH protocol is prone to a prefix truncation attack, known as the Terrapin attack. This attack allows a MITM attacker to effect a limited break of the integrity of the early encrypted SSH transport protocol by sending extra messages prior to the commencement of encryption, and deleting an equal number of consecutive messages im ...


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