Secunia CSI 5.0
Overview
Advisories
Research
Forums
Create Profile
Our Commitment
Database
Search
Advisories by Product
Advisories by Vendor
Terminology
Report Vulnerability
Insecure Library Loading

Secunia Advisory SA22091

OpenSSH Identical Blocks Denial of Service Vulnerability
Secunia Advisory SA22091
Get alerted and manage the vulnerability life cycle
Free Trial

Release Date 2006-09-26
Last Update 2006-10-05
   
Popularity 25,512 views
Comments 0 comments

Criticality level Moderately criticalModerately critical
Impact DoS
Where From remote
Authentication level Available in Customer Area
   
Report reliability Available in Customer Area
Solution Status Vendor Patch
   
   
3rd party PoC/exploit Link available in Customer Area
Systems affected Available in Customer Area
Approve distribution Available in Customer Area
   
Software:
OpenSSH 3.x
OpenSSH 4.x

Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2006-4924 CVSS available in Customer Area
  

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.
Further details available in Customer Area

Provided and/or discovered by
Tavis Ormandy, Google Security Team

Changelog
Further details available in Customer Area

Original Advisory
https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=207955

Other references
Further details available in Customer Area

Deep Links
Links available in Customer Area


Do you have additional information related to this advisory?

Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com

Subject: OpenSSH Identical Blocks Denial of Service Vulnerability
 
No posts yet

-

You must be logged in to post a comment.




 Products Solutions Customers Partner Resources Company
 
 Corporate
Vulnerability Intelligence Manager (VIM)
Corporate Software Inspector (CSI)
Consumer
Personal Software Inspector (PSI)
Online Software Inspector (OSI)
 Industry
Compliance
Technology
Integration
 Customers
Testimonials
 VARS
MSSP
Technology Partners
References
 Factsheets
Reports & Papers
Webinars
Events
 About us
Careers
Memberships
Newsroom


 
© 2002-2012 Secunia ApS - Rued Langgaards Vej 8, 4th floor, DK-2300 Copenhagen, Denmark - +45 7020 5144
Terms & Conditions and Copyright - Privacy - Report Vulnerability