Pidgin up to 2.5.8 msn_slplink_process_msg resource management

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability, which was classified as very critical, was found in Pidgin (Messaging Software). Affected is the function msn_slplink_process_msg. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The msn_slplink_process_msg function in libpurple/protocols/msn/slplink.c in libpurple, as used in Pidgin (formerly Gaim) before 2.5.9 and Adium 1.3.5 and earlier, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) by sending multiple crafted SLP (aka MSNSLP) messages to trigger an overwrite of an arbitrary memory location. NOTE: this issue reportedly exists because of an incomplete fix for CVE-2009-1376.

The weakness was presented 05/02/2009 by CORE Security with CORE Security Technologies (Website). The advisory is shared for download at This vulnerability is traded as CVE-2009-2694. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and a public exploit are known. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/20/2021).

A public exploit has been developed by Pierre Nogues in Java and been published 5 months after the advisory. The exploit is shared for download at It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 40966 (Mandriva Linux Security Advisory : pidgin (MDVSA-2009:230)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva Local Security Checks.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at X-Force (52615), Tenable (40966) and Exploit-DB (9615). See 49847 for similar entry.






CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.4

VulDB Base Score: 10.0
VulDB Temp Score: 9.4
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Class: Resource management
CWE: CWE-399 / CWE-404
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Pierre Nogues
Programming Language: 🔍
Download: 🔍

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Nessus ID: 40966
Nessus Name: Mandriva Linux Security Advisory : pidgin (MDVSA-2009:230)
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OpenVAS ID: 64753
OpenVAS Name: Debian Security Advisory DSA 1870-1 (pidgin)
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Threat Intelligenceinfo

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Recommended: no mitigation known
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05/02/2009 🔍
05/22/2009 +20 days 🔍
08/05/2009 +74 days 🔍
08/18/2009 +13 days 🔍
08/18/2009 +0 days 🔍
08/21/2009 +3 days 🔍
08/24/2009 +3 days 🔍
09/09/2009 +16 days 🔍
09/09/2009 +0 days 🔍
09/14/2009 +5 days 🔍
03/18/2015 +2011 days 🔍
08/20/2021 +2347 days 🔍


Researcher: CORE Security
Organization: CORE Security Technologies
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2009-2694 (🔍)

X-Force: 52615
Vulnerability Center: 23266 - Pidgin \x3C 2.5.9 and Adium \x3C\x3D 1.3.5 Crafted SLP Messages Remote Arbitrary Code Execution Vulnerability, High
SecurityFocus: 36071 - Pidgin 'msn_slplink_process_msg()' NULL Pointer Dereference Remote Code Execution Vulnerability
OSVDB: 54647 - Pidgin libpurple msn_slplink_process_msg() Function MSN SLP Message Handling Remote Overflow

scip Labs:
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Created: 03/18/2015 03:15 PM
Updated: 08/20/2021 12:34 PM
Changes: 03/18/2015 03:15 PM (65), 02/13/2017 10:21 AM (17), 08/20/2021 12:27 PM (4), 08/20/2021 12:34 PM (1)
Complete: 🔍


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