OpenSSH Identical Blocks Denial of Service Vulnerability - Secunia Advisories - Vulnerability Intelligence

Home > Vulnerability Intelligence > Secunia Advisories > OpenSSH Identical Blocks Denial of Service Vulnerability

Secunia Advisories

Advisories

Advisories by Product

Business Solutions Restricted

Partner Solutions Restricted

About

OpenSSH Identical Blocks Denial of Service Vulnerability
Secunia Advisory:	SA22091	Advisory Toolbox: Issue ticket Save in to-do list Mark as handled Exploit information Download as PDF Review actions Add comment
Release Date:	2006-09-26
Last Update:	2006-10-05
Popularity:	16,151 views

Critical:	Moderately critical
Impact:	DoS
Where:	From remote
Solution Status:	Vendor Patch

Software:	OpenSSH 3.x OpenSSH 4.x

Subscribe:	Instant alerts on relevant vulnerabilities

CVE reference:	CVE-2006-4924

Description: Tavis Ormandy has reported a vulnerability in OpenSSH, which can be exploited by malicious people to cause a DoS (Denial of Service). The vulnerability is caused due to an error within the handling of multiple identical blocks in a ssh packet. If ssh protocol 1 is enabled, this can be exploited to cause a DoS due to CPU consumption by sending specially crafted ssh packets. Solution: Apply patches. http://www.openbsd.org/cgi-bin/cvsweb...9&r2=1.30&sortby=date&f=h http://www.openbsd.org/cgi-bin/cvsweb...&r2=1.144&sortby=date&f=h http://www.openbsd.org/cgi-bin/cvsweb...9&r2=1.10&sortby=date&f=h Provided and/or discovered by: Tavis Ormandy, Google Security Team Changelog: 2006-10-05: Added US-CERT reference. Original Advisory: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=207955 Other References: US-CERT VU#787448: http://www.kb.cert.org/vuls/id/787448

Track this Secunia Advisory
Customers of the Secunia Vulnerability Intelligence solutions will automatically receive updates when new information regarding this advisory is released. Read more about our Vulnerability Intelligence solutions and what they can do for you and your company.

About this Secunia Advisory
Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise. Secunia collects, validates, and verifies all vulnerability reports issued by security research groups, vendors, and others.

Latest Advisories

5th Sep, 2008

New advisories:	14
New vulnerabilities:	18
Updated advisories:	22

Less // 298 views

Netgear WN802T Wireless Access Point Two Vulnerabilities

Less // 240 views

Fedora update for xastir

Less // 302 views

XASTIR Insecure Temporary Files

Less // 244 views

Fedora update for samba

Less // 250 views

Fedora update for bitlbee

Less // 655 views

3Com Wireless 8760 Access Point HTTP Request Processing Denial of Service

Moderately // 536 views

CS-Cart "cs_cookies" SQL Injection Vulnerability

Less // 620 views

Drupal Content Construction Kit Script Insertion Vulnerabilities

Less // 610 views

HP OpenView Select Identity Connectors Information Disclosure

Moderately // 493 views

rPath update for libtiff

Solutions | More...

Send Feedback to Secunia
If you have new information regarding this Secunia advisory or a product in our database, please send it to us using either our web form or email us at vuln@secunia.com. Ideas, suggestions, and other feedback are most welcome.