CVE-2020-1730

Published: 09 April 2020

A flaw was found in libssh versions before 0.8.9 and before 0.9.4 in the way it handled AES-CTR (or DES ciphers if enabled) ciphers. The server or client could crash when the connection hasn't been fully initialized and the system tries to cleanup the ciphers when closing the connection. The biggest threat from this vulnerability is system availability.

Priority

Medium

CVSS 3 base score: 5.3

Status

Package Release Status
libssh
Launchpad, Ubuntu, Debian
Upstream
Released (0.8.9,0.9.4)
Ubuntu 20.04 LTS (Focal Fossa)
Released (0.9.3-2ubuntu2)
Ubuntu 18.04 LTS (Bionic Beaver)
Released (0.8.0~20170825.94fa1e38-1ubuntu0.6)
Ubuntu 16.04 LTS (Xenial Xerus) Not vulnerable
(code not present)
Ubuntu 14.04 ESM (Trusty Tahr) Does not exist