Ubuntu 5.04 / 5.10 / 6.06 LTS : openssh vulnerabilities (USN-355-1)

Ubuntu Security Notice (C) 2006-2015 Canonical, Inc. / NASL script (C) 2007-2015 Tenable Network Security, Inc.

Synopsis :

The remote Ubuntu host is missing one or more security-related patches.

Description :

Tavis Ormandy discovered that the SSH daemon did not properly handle
authentication packets with duplicated blocks. By sending specially
crafted packets, a remote attacker could exploit this to cause the ssh
daemon to drain all available CPU resources until the login grace time
expired. (CVE-2006-4924)

Mark Dowd discovered a race condition in the server's signal handling.
A remote attacker could exploit this to crash the server.

Solution :

Update the affected packages.

Risk factor :

High / CVSS Base Score : 9.3
CVSS Temporal Score : 8.1
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 27935 ()

Bugtraq ID: 20216

CVE ID: CVE-2006-4924