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 >> Gentoo Local Security Checks >> [GLSA-200609-17] OpenSSH: Denial of Service


Vulnerability Assessment Details

[GLSA-200609-17] OpenSSH: Denial of Service

Vulnerability Assessment Summary
OpenSSH: Denial of Service

Detailed Explanation for this Vulnerability Assessment
The remote host is affected by the vulnerability described in GLSA-200609-17
(OpenSSH: Denial of Service)


Tavis Ormandy of the Google Security Team discovered a Denial of
Service vulnerability in the SSH protocol version 1 CRC compensation
attack detector.

Impact

A remote unauthenticated attacker may be able to trigger excessive CPU
usage by sending a pathological SSH message, denying service to other
legitimate users or processes.

Workaround

The system administrator may disable SSH protocol version 1 in
/etc/ssh/sshd_config.

References:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-4924


Solution:
All OpenSSH users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/openssh-4.3_p2-r5"


Network Security Threat Level: Medium


Networks Security ID:

Vulnerability Assessment Copyright: (C) 2006 Michel Arboi

Cables, Connectors

USB Video Capture Converter Analog to Digital VHS VCR TV to PC Computer Laptop
$17.84
USB Video Capture Converter Analog to Digital VHS VCR TV to PC Computer Laptop pictureEAI Electronic Associates 12.266 Reference Panel for TR Series Analog Computer
$93.5
EAI Electronic Associates 12.266 Reference Panel for TR Series Analog Computer   pictureEAI Electronic Associates 40026792 26791 for TR Series Analog Computer
$83.29
EAI Electronic Associates 40026792 26791 for TR Series Analog Computer  pictureEAI Electronic Associates 36.082 Timing Unit for TR Series Analog Computer
$93.5
EAI Electronic Associates 36.082 Timing Unit for TR Series Analog Computer picture


Discussions

No Discussions have been posted on this vulnerability.