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Secunia Advisory SA10133

OpenSSL ASN.1 Parsing Denial of Service Vulnerability
Secunia Advisory SA10133
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Release Date 2003-11-04
Last Update 2003-11-05
   
Popularity 14,637 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
   
Systems affected Available in Customer Area
Approve distribution Available in Customer Area
   
Software:
OpenSSL 0.x

Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2003-0851 CVSS available in Customer Area
  

Description

A vulnerability has been reported in OpenSSL, which can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an error when parsing certain ASN.1 tags. This can be exploited to trigger a large recursion, which may cause OpenSSL to crash on Windows systems.

The vulnerability is related to the vulnerabilities described in:
SA9886


Solution
Update to version 0.9.6l or 0.9.7c and recompile any applications statically linked to OpenSSL libraries.
Further details available in Customer Area

Provided and/or discovered by
Novell

Changelog
Further details available in Customer Area

Original Advisory
Denial of Service in ASN.1 parsing:
http://www.openssl.org/news/secadv_20031104.txt

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: OpenSSL ASN.1 Parsing Denial of Service Vulnerability
 
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