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Insecure Library Loading
Highly critical

Lynx "HTrjis()" NNTP Buffer Overflow Vulnerability

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Release Date:  2005-10-17    Views:  15,320

Secunia Advisory SA17216

Where:

From remote

Impact:

System access

Solution Status:

Vendor Patch

Software:

CVE Reference(s):

Description


Ulf Harnhammar has reported a vulnerability in Lynx, which can be exploited by malicious people to compromise a user's system.

The vulnerability is caused due to a boundary error in the "HTrjis()" function in the handling of article headers sent from NNTP (Network News Transfer Protocol) servers. This can be exploited to cause a stack-based buffer overflow by e.g. tricking a user into visiting a malicious web site which redirects to a malicious NNTP server via the "nntp:" URI handler.

Successful exploitation allows execution of arbitrary code.

The vulnerability has been reported in versions 2.8.3, 2.8.4, 2.8.5, and 2.8.6dev.13. Other versions may also be affected.


Solution:
The vulnerability has been fixed in version 2.8.6dev.14.

Provided and/or discovered by:
Ulf Harnhammar

Deep Links:
Links available to Secunia VIM customers

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: Lynx "HTrjis()" NNTP Buffer Overflow Vulnerability

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