tcpdump 802.11 "parse_elements()" Off-By-One Vulnerability
Secunia Advisory: SA24318
Release Date: 2007-03-02
Last Update: 2007-03-05
Popularity: 7,332 views

Critical:
Less critical
Impact: DoS
Where: From remote
Solution Status: Vendor Workaround

Software:tcpdump 3.x

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CVE reference:CVE-2007-1218


Description:
Moritz Jodeit has reported a vulnerability in tcpdump, which potentially can be exploited by malicious people to cause a DoS (Denial of Service).

The vulnerability is caused due to an off-by-one error within the "parse_elements()" function in print-802.11.c. This can be exploited to cause a one byte buffer overflow via a specially crafted 802.11 frame.

The vulnerability is reported in version 3.9.5. Other versions may also be affected.

Solution:
Fixed in the CVS repository.

Provided and/or discovered by:
Moritz Jodeit

Changelog:
2007-03-05: Added CVE reference.

Original Advisory:
http://lists.grok.org.uk/pipermail/full-disclosure/2007-March/052739.html


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