OpenSSH With OpenPAM DoS

medium Nessus Plugin ID 44073
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Synopsis

The SSH server running on the remote host has a denial of service vulnerability.

Description

According to its banner, the version of OpenSSH running on the remote host is affected by a remote denial of service vulnerability. When used with OpenPAM, OpenSSH does not properly handle when a forked child process ends during PAM authentication. This could allow a remote attacker to cause a denial of service by connecting several times to the SSH server, waiting for the password prompt and then disconnecting.

Solution

Upgrade to OpenSSH 3.8.1p1 or later.

See Also

https://bugzilla.mindrot.org/show_bug.cgi?id=839

http://www.nessus.org/u?170f19e3

Plugin Details

Severity: Medium

ID: 44073

File Name: openssh_381p1.nasl

Version: 1.3

Type: remote

Published: 10/4/2011

Updated: 7/16/2018

Dependencies: ssh_detect.nasl

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:openbsd:openssh

Exploit Ease: No known exploits are available

Patch Publication Date: 4/19/2004

Vulnerability Publication Date: 4/9/2004

Reference Information

CVE: CVE-2006-0883

BID: 16892