OpenSSH < 2.9.9p1 Resource Limit Bypass

This script is Copyright (C) 2011-2012 Tenable Network Security, Inc.


Synopsis :

The remote SSH service is affected by a denial of service
vulnerability.

Description :

According to its banner, the remote host is running a version of
OpenSSH earlier than 2.9.9p1. Such versions fail to initiate a
Pluggable Authentication Module (PAM) session if commands are executed
with no pty. A remote, unauthenticated attacker, exploiting this
flaw, could bypass resource limits (rlimits) set in pam.d.

See also :

http://marc.info/?l=bugtraq&m=99324968918628&w=2

Solution :

Upgrade to OpenSSH 2.9.9p1 or later.

Risk factor :

High / CVSS Base Score : 7.5
(CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P)
CVSS Temporal Score : 7.5
(CVSS2#E:H/RL:U/RC:ND)
Public Exploit Available : true

Family: Misc.

Nessus Plugin ID: 44069 ()

Bugtraq ID: 2917

CVE ID: CVE-2001-1459