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AUSCERT Security Bulletin
ASB-2010.0179
Vulnerability corrected in Pidgin
23 July 2010
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AusCERT Security Bulletin Summary
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Product: Pidgin
Operating System: Windows
UNIX variants (UNIX, Linux, OSX)
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2010-2528
Member content until: Sunday, August 22 2010
OVERVIEW
A denial of service vulnerability has been corrected in
Pidgin version 2.7.2.
IMPACT
Libpurple could attempt to dereference a null pointer with a
malformed X-Status message, causing the client to crash. [1]
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." [2]
MITIGATION
This vulnerability has been corrected in 2.7.2.
The updates for each platform are available to downlaod
from the vendor's website. [3]
REFERENCES
[1] Pidgin Security Advisory
http://www.pidgin.im/news/security/index.php?id=47
[2] Certificates
http://developer.pidgin.im/viewmtn/revision/info/8e8ff246492e45af8f8d0808296d6f2906794dc0
[3] Download Pidgin
http://www.pidgin.im/download/
AusCERT has made every effort to ensure that the information contained
in this document is accurate. However, the decision to use the information
described is the responsibility of each user or organisation. The decision to
follow or act on information or advice contained in this security bulletin is
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
acting on information or advice contained in this security bulletin.
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Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072
Internet Email: auscert@auscert.org.au
Facsimile: (07) 3365 7031
Telephone: (07) 3365 4417 (International: +61 7 3365 4417)
AusCERT personnel answer during Queensland business hours
which are GMT+10:00 (AEST).
On call after hours for member emergencies only.
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