Vulnerability Assessment & Network Security Forums

If through a vulnerability assessment, a network security issue is detected for the vulnerability below, applying the appropriate security patches in a timely matter is very important. If you have detected that your system has already been compromised, following CERT's Network Security recovery document will assist with recommended steps for system recovery.

Home >> Browse Vulnerability Assessment Database >> Mandrake Local Security Checks >> MDKSA-2006:179: openssh

Vulnerability Assessment Details

MDKSA-2006:179: openssh

Vulnerability Assessment Summary
Check for the version of the openssh package

Detailed Explanation for this Vulnerability Assessment

The remote host is missing the patch for the advisory MDKSA-2006:179 (openssh).

Tavis Ormandy of the Google Security Team discovered a Denial of
Service vulnerability in the SSH protocol version 1 CRC compensation
attack detector. This could permit a remote unauthenticated attacker to
trigger excessive CPU utilization by sending a specially crafted SSH
message, which would then deny ssh services to other users or processes
(CVE-2006-4924, CVE-2006-4925). Please note that Mandriva ships with
only SSH protocol version 2 enabled by default.
Next, an unsafe signal handler was found by Mark Dowd. This signal
handler was vulnerable to a race condition that could be exploited to
perform a pre-authentication DoS, and theoretically a
pre-authentication remote code execution in the case where some
authentication methods like GSSAPI are enabled (CVE-2006-5051).
Updated packages have been patched to correct this issue.

Solution : http://wwwnew.mandriva.com/security/advisories?name=MDKSA-2006:179
Network Security Threat Level: High

Networks Security ID:

Vulnerability Assessment Copyright: This script is Copyright (C) 2007 Tenable Network Security

Cables, Connectors