CVE-2011-1091

Pidgin: Multiple NULL pointer dereference flaws in Yahoo protocol plug-in

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

libymsg.c in the Yahoo! protocol plugin in libpurple in Pidgin 2.6.0 through 2.7.10 allows (1) remote authenticated users to cause a denial of service (NULL pointer dereference and application crash) via a malformed YMSG notification packet, and allows (2) remote Yahoo! servers to cause a denial of service (NULL pointer dereference and application crash) via a malformed YMSG SMS message.

libymsg.c en Yahoo! en el plugin del protocolo en libpurple en Pidgin v2.6.0 hasta v2.7.10 permite (1) a usuarios autenticados de forma remota provocar una denegación de servicio (resolución de puntero NULL y caída de la aplicación) a través de notificaciones de paquetes YMSG mal formados, y permite (2) servidores remotos de Yahoo! provocar una denegación de servicio (resolución de puntero NULL y caída de la aplicación) a través de mensajes YMSG SMS mal formados.

*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

Single

Confidentiality

None

Integrity

None

Availability

Partial

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2011-02-24 CVE Reserved
2011-03-14 CVE Published
2024-08-06 CVE Updated
2025-04-16 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-476: NULL Pointer Dereference

CAPEC

References (21)

URL	Tag	Source
http://secunia.com/advisories/43721	Third Party Advisory
http://secunia.com/advisories/46376	Third Party Advisory
http://www.securityfocus.com/bid/46837	Vdb Entry
http://www.vupen.com/english/advisories/2011/0643	Vdb Entry
http://www.vupen.com/english/advisories/2011/0661	Vdb Entry
http://www.vupen.com/english/advisories/2011/0669	Vdb Entry
http://www.vupen.com/english/advisories/2011/0703	Vdb Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/66055	Vdb Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18402	Signature

URL	Date	SRC

URL	Date	SRC
http://developer.pidgin.im/viewmtn/revision/diff/5cbe18129b6e7c660bc093f7e5e1414ceca17d04/with/a7c415abba1f5f01f79295337518837f73d99bb7/libpurple/protocols/yahoo/libymsg.c	2023-02-13
http://developer.pidgin.im/viewmtn/revision/info/a7c415abba1f5f01f79295337518837f73d99bb7	2023-02-13
http://www.pidgin.im/news/security/?id=51	2023-02-13

URL	Date	SRC
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/055874.html	2023-02-13
http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056309.html	2023-02-13
http://secunia.com/advisories/43695	2023-02-13
http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.466884	2023-02-13
http://www.redhat.com/support/errata/RHSA-2011-0616.html	2023-02-13
http://www.redhat.com/support/errata/RHSA-2011-1371.html	2023-02-13
https://bugzilla.redhat.com/show_bug.cgi?id=683031	2011-10-14
https://hermes.opensuse.org/messages/13195955	2023-02-13
https://access.redhat.com/security/cve/CVE-2011-1091	2011-10-14

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
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
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"		Pidgin Search vendor "Pidgin" for product "Pidgin"				2.6.2 Search vendor "Pidgin" for product "Pidgin" and version "2.6.2"		-		Affected
Pidgin Search vendor "Pidgin"		Pidgin Search vendor "Pidgin" for product "Pidgin"				2.6.4 Search vendor "Pidgin" for product "Pidgin" and version "2.6.4"		-		Affected
Pidgin Search vendor "Pidgin"		Pidgin Search vendor "Pidgin" for product "Pidgin"				2.6.5 Search vendor "Pidgin" for product "Pidgin" and version "2.6.5"		-		Affected
Pidgin Search vendor "Pidgin"		Pidgin Search vendor "Pidgin" for product "Pidgin"				2.6.6 Search vendor "Pidgin" for product "Pidgin" and version "2.6.6"		-		Affected
Pidgin Search vendor "Pidgin"		Pidgin Search vendor "Pidgin" for product "Pidgin"				2.7.0 Search vendor "Pidgin" for product "Pidgin" and version "2.7.0"		-		Affected
Pidgin Search vendor "Pidgin"		Pidgin Search vendor "Pidgin" for product "Pidgin"				2.7.1 Search vendor "Pidgin" for product "Pidgin" and version "2.7.1"		-		Affected
Pidgin Search vendor "Pidgin"		Pidgin Search vendor "Pidgin" for product "Pidgin"				2.7.2 Search vendor "Pidgin" for product "Pidgin" and version "2.7.2"		-		Affected
Pidgin Search vendor "Pidgin"		Pidgin Search vendor "Pidgin" for product "Pidgin"				2.7.3 Search vendor "Pidgin" for product "Pidgin" and version "2.7.3"		-		Affected
Pidgin Search vendor "Pidgin"		Pidgin Search vendor "Pidgin" for product "Pidgin"				2.7.4 Search vendor "Pidgin" for product "Pidgin" and version "2.7.4"		-		Affected
Pidgin Search vendor "Pidgin"		Pidgin Search vendor "Pidgin" for product "Pidgin"				2.7.5 Search vendor "Pidgin" for product "Pidgin" and version "2.7.5"		-		Affected
Pidgin Search vendor "Pidgin"		Pidgin Search vendor "Pidgin" for product "Pidgin"				2.7.6 Search vendor "Pidgin" for product "Pidgin" and version "2.7.6"		-		Affected
Pidgin Search vendor "Pidgin"		Pidgin Search vendor "Pidgin" for product "Pidgin"				2.7.7 Search vendor "Pidgin" for product "Pidgin" and version "2.7.7"		-		Affected
Pidgin Search vendor "Pidgin"		Pidgin Search vendor "Pidgin" for product "Pidgin"				2.7.8 Search vendor "Pidgin" for product "Pidgin" and version "2.7.8"		-		Affected
Pidgin Search vendor "Pidgin"		Pidgin Search vendor "Pidgin" for product "Pidgin"				2.7.9 Search vendor "Pidgin" for product "Pidgin" and version "2.7.9"		-		Affected
Pidgin Search vendor "Pidgin"		Pidgin Search vendor "Pidgin" for product "Pidgin"				2.7.10 Search vendor "Pidgin" for product "Pidgin" and version "2.7.10"		-		Affected