CVE-2009-3083

Pidgin: NULL pointer dereference by processing incomplete MSN SLP invite (DoS)

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The msn_slp_sip_recv function in libpurple/protocols/msn/slp.c in the MSN protocol plugin in libpurple in Pidgin before 2.6.2 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an SLP invite message that lacks certain required fields, as demonstrated by a malformed message from a KMess client.

La función msn_slp_sip_recv de libpurple/protocols/msn/slp.c en el "plugin" (complemento) del protocolo MSN de libpurple de Pidgin en sus versiones anteriores a la v2.6.2 permite a atacantes remotos provocar una denegación de servicio (resolución de una referencia a puntero NULL y caída de la aplicación) a través de un mensaje SLP invite que carece de determinados campos obligatorios, tal como se ha demostrado con un mensaje mal formado desde un cliente KMess.

It was discovered that Pidgin did not properly handle certain topic messages in the IRC protocol handler, enforce the "require TLS/SSL" setting when connecting to certain older Jabber servers, did not properly handle certain SLP invite messages in the MSN protocol handler, did not properly handle certain errors in the XMPP protocol handler, did not properly handle malformed contact-list data in the OSCAR protocol handler and did not properly handle custom smiley requests in the MSN protocol handler.

*Credits: N/A

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2009-09-08 CVE Reserved
2009-09-08 CVE Published
2024-08-07 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-476: NULL Pointer Dereference

CAPEC

References (10)

URL	Tag	Source
http://www.securityfocus.com/bid/36277	Vdb Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11852	Signature
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6322	Signature

URL	Date	SRC

URL	Date	SRC
http://developer.pidgin.im/ticket/10159	2017-09-19
http://developer.pidgin.im/viewmtn/revision/diff/6d3fc30a0a0a379281efc5a6872a9c1d7c24c650/with/b4a95ea62b81a06ffc1993912471c511b786efdd/libpurple/protocols/msn/slp.c	2017-09-19
http://developer.pidgin.im/viewmtn/revision/info/b4a95ea62b81a06ffc1993912471c511b786efdd	2017-09-19
http://www.pidgin.im/news/security/index.php?id=39	2017-09-19

URL	Date	SRC
http://secunia.com/advisories/36601	2017-09-19
https://access.redhat.com/security/cve/CVE-2009-3083	2009-10-29
https://bugzilla.redhat.com/show_bug.cgi?id=521832	2009-10-29

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	<= 2.6.1 Search vendor "Pidgin" for product "Pidgin" and version " <= 2.6.1"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.0.0 Search vendor "Pidgin" for product "Pidgin" and version "2.0.0"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.0.1 Search vendor "Pidgin" for product "Pidgin" and version "2.0.1"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.0.2 Search vendor "Pidgin" for product "Pidgin" and version "2.0.2"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.0.2 Search vendor "Pidgin" for product "Pidgin" and version "2.0.2"	linux	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.1.0 Search vendor "Pidgin" for product "Pidgin" and version "2.1.0"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.1.1 Search vendor "Pidgin" for product "Pidgin" and version "2.1.1"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.2.0 Search vendor "Pidgin" for product "Pidgin" and version "2.2.0"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.2.1 Search vendor "Pidgin" for product "Pidgin" and version "2.2.1"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.2.2 Search vendor "Pidgin" for product "Pidgin" and version "2.2.2"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.3.0 Search vendor "Pidgin" for product "Pidgin" and version "2.3.0"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.3.1 Search vendor "Pidgin" for product "Pidgin" and version "2.3.1"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.4.0 Search vendor "Pidgin" for product "Pidgin" and version "2.4.0"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.4.0 Search vendor "Pidgin" for product "Pidgin" and version "2.4.0"	32_bit	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.4.1 Search vendor "Pidgin" for product "Pidgin" and version "2.4.1"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.4.1 Search vendor "Pidgin" for product "Pidgin" and version "2.4.1"	32_bit	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.4.2 Search vendor "Pidgin" for product "Pidgin" and version "2.4.2"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.4.2 Search vendor "Pidgin" for product "Pidgin" and version "2.4.2"	32_bit	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.4.3 Search vendor "Pidgin" for product "Pidgin" and version "2.4.3"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.4.3 Search vendor "Pidgin" for product "Pidgin" and version "2.4.3"	32_bit	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.5.0 Search vendor "Pidgin" for product "Pidgin" and version "2.5.0"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.5.0 Search vendor "Pidgin" for product "Pidgin" and version "2.5.0"	32_bit	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.5.1 Search vendor "Pidgin" for product "Pidgin" and version "2.5.1"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.5.2 Search vendor "Pidgin" for product "Pidgin" and version "2.5.2"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.5.2 Search vendor "Pidgin" for product "Pidgin" and version "2.5.2"	32_bit	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.5.3 Search vendor "Pidgin" for product "Pidgin" and version "2.5.3"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.5.3 Search vendor "Pidgin" for product "Pidgin" and version "2.5.3"	32_bit	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.5.4 Search vendor "Pidgin" for product "Pidgin" and version "2.5.4"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.5.4 Search vendor "Pidgin" for product "Pidgin" and version "2.5.4"	32_bit	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.5.5 Search vendor "Pidgin" for product "Pidgin" and version "2.5.5"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.5.5 Search vendor "Pidgin" for product "Pidgin" and version "2.5.5"	32_bit	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.5.6 Search vendor "Pidgin" for product "Pidgin" and version "2.5.6"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.5.7 Search vendor "Pidgin" for product "Pidgin" and version "2.5.7"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.5.8 Search vendor "Pidgin" for product "Pidgin" and version "2.5.8"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.5.9 Search vendor "Pidgin" for product "Pidgin" and version "2.5.9"	-	Affected
Pidgin Search vendor "Pidgin"	Libpurple Search vendor "Pidgin" for product "Libpurple"	*	-	Affected	in	Pidgin Search vendor "Pidgin"	Pidgin Search vendor "Pidgin" for product "Pidgin"	2.6.0 Search vendor "Pidgin" for product "Pidgin" and version "2.6.0"	-	Affected