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Secunia Advisory SA18794

GnuTLS libtasn1 DER Decoding Denial of Service Vulnerabilities
Secunia Advisory SA18794
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Release Date 2006-02-10
Last Update 2006-02-13
   
Popularity 11,220 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:
GnuTLS 1.x
GnuTLS libtasn1 Tiny ASN.1 library 0.x
Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2006-0645 CVSS available in Customer Area
  

Description
Evgeny Legerov has reported some vulnerabilities in GnuTLS libtasn1, which potentially can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerabilities are caused due to errors within the DER decoder in libtasn1. This can be exploited to crash an application that uses the library via specially-crafted input.

The vulnerabilities have been reported in libtasn1 prior to 0.2.18 and in GnuTLS prior to 1.2.10.

Solution
Update to the fixed versions.
Further details available in Customer Area

Provided and/or discovered by
Evgeny Legerov, GLEG Ltd.

Changelog
Further details available in Customer Area

Original Advisory
http://lists.gnupg.org/pipermail/gnutls-dev/2006-February/001058.html

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: GnuTLS libtasn1 DER Decoding Denial of Service Vulnerabilities
 
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