Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Red Hat libssh
libssh versions before 0.8.9affectedlibssh versions before 0.9.4affected
References
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VLSWHBQ3EPKGTGLQNH554Z746BJ3C554/ ↗
- https://usn.ubuntu.com/4327-1/ ↗
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2A7BIFKUYIYKTY7FX4BEWVC2OHS5DPOU/ ↗
- https://www.oracle.com/security-alerts/cpuoct2020.html ↗
- https://www.libssh.org/security/advisories/CVE-2020-1730.txt ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1730 ↗
- https://security.netapp.com/advisory/ntap-20200424-0001/ ↗