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AUSCERT Security Bulletin
Vulnerability corrected in Pidgin
23 July 2010
AusCERT Security Bulletin Summary
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Denial of Service -- Remote/Unauthenticated
CVE Names: CVE-2010-2528
Member content until: Sunday, August 22 2010
A denial of service vulnerability has been corrected in
Pidgin version 2.7.2.
Libpurple could attempt to dereference a null pointer with a
malformed X-Status message, causing the client to crash. 
Pidgin provides the following details about the flaw:
"Problem #1 (the remotely-triggerable crash):
The crash happens when a buddy sets an xstatus message
containing <desc> but no closing </desc>, or <title> but no
closing </title>. The fix is to check the result of
strstr(closing_tag_name) and do nothing if it is NULL.
This is CVE-2010-2528." 
This vulnerability has been corrected in 2.7.2.
The updates for each platform are available to downlaod
from the vendor's website. 
 Pidgin Security Advisory
 Download Pidgin
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in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
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the responsibility of each user or organisation, and should be considered in
accordance with your organisation's site policies and procedures. AusCERT
takes no responsibility for consequences which may arise from following or
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Australian Computer Emergency Response Team
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