USN-6592-2: libssh vulnerabilities
5 February 2024
Several security issues were fixed in libssh.
- libssh - A tiny C SSH library
USN-6592-1 fixed vulnerabilities in libssh. This update provides the
corresponding updates for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.
Original advisory details:
It was discovered that libssh incorrectly handled the ProxyCommand and the
ProxyJump features. A remote attacker could possibly use this issue to
inject malicious code into the command of the features mentioned through
the hostname parameter. (CVE-2023-6004)
It was discovered that libssh incorrectly handled return codes when
performing message digest operations. A remote attacker could possibly use
this issue to cause libssh to crash, obtain sensitive information, or
execute arbitrary code. (CVE-2023-6918)
The problem can be corrected by updating your system to the following package versions:
- libssh-4 - 0.8.0~20170825.94fa1e38-1ubuntu0.7+esm3
- libssh-gcrypt-4 - 0.8.0~20170825.94fa1e38-1ubuntu0.7+esm3
In general, a standard system update will make all the necessary changes.
- USN-6592-1: libssh, libssh-4, libssh-dev, libssh-doc, libssh-gcrypt-4, libssh-gcrypt-dev