BugTraq
ZDI-08-054: Multiple Vendor libpurple MSN Protocol SLP Message Heap Overflow Vulnerability Aug 28 2008 08:13PM
zdi-disclosures 3com com
ZDI-08-054: Multiple Vendor libpurple MSN Protocol SLP Message Heap

Overflow Vulnerability

http://www.zerodayinitiative.com/advisories/ZDI-08-054

August 28, 2008

-- CVE ID:

CVE-2008-2927

-- Affected Vendors:

Adium

Pidgin

-- Affected Products:

Adium Adiumx

Pidgin Pidgin

-- Vulnerability Details:

This vulnerability allows remote attackers to execute arbitrary code on

systems with vulnerable installations of messaging applications that

make use of the libpurple library. User interaction is not required to

exploit this vulnerability.

The specific flaw exists in the implementation of the MSN protocol,

specifically the handling of SLP messages. The function

msn_slplink_process_msg() fails to properly validate an offset value

specified in the SLP packet. By providing a specific value, an attacker

can overflow a heap buffer resulting in arbitrary code execution.

-- Vendor Response:

Pidgin has issued an update to correct this vulnerability. More

details can be found at:

http://www.pidgin.im/news/security/?id=25

-- Disclosure Timeline:

2008-05-27 - Vulnerability reported to vendor

2008-08-28 - Coordinated public release of advisory

-- Credit:

This vulnerability was discovered by:

* Anonymous

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