CVE-2011-4603

pidgin: SILC remote crash on channel messages

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

The silc_channel_message function in ops.c in the SILC protocol plugin in libpurple in Pidgin before 2.10.1 does not perform the expected UTF-8 validation on message data, which allows remote attackers to cause a denial of service (application crash) via a crafted message, a different vulnerability than CVE-2011-3594.

La función silc_channel_message de ops.c del complemento del protocolo SILC de libpurple de Pidgin en versiones anteriores 2.10.1 no realiza la validación prevista UTF-8 en los datos del mensaje, lo que permite a atacantes remotos provocar una denegación de servicio (caída de la aplicación) a través de un mensaje modificado. Una vulnerabilidad distinta a la CVE-2011-3594.

Pidgin is an instant messaging program which can log in to multiple accounts on multiple instant messaging networks simultaneously. An input sanitization flaw was found in the way the AOL Open System for Communication in Realtime protocol plug-in in Pidgin, used by the AOL ICQ and AIM instant messaging systems, escaped certain UTF-8 characters. A remote attacker could use this flaw to crash Pidgin via a specially-crafted OSCAR message. An input sanitization flaw was found in the way the Pidgin SILC protocol plug-in escaped certain UTF-8 characters in channel messages. A remote attacker could use this flaw to crash Pidgin via a specially-crafted SILC message.

*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

2011-11-29 CVE Reserved
2011-12-15 CVE Published
2024-08-07 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (10)

URL	Tag	Source
http://developer.pidgin.im/viewmtn/revision/info/afb9ede3de989f217f03d5670cca00e628bd11f1	X_refsource_confirm
http://secunia.com/advisories/47234	Third Party Advisory
http://www.securityfocus.com/bid/51074	Vdb Entry
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18303	Signature

URL	Date	SRC

URL	Date	SRC
http://developer.pidgin.im/viewmtn/revision/diff/c7b95cc3be0590b52edc02d4750ae62844c1acb6/with/afb9ede3de989f217f03d5670cca00e628bd11f1/libpurple/protocols/silc/ops.c	2017-09-19
http://www.pidgin.im/news/security/?id=59	2017-09-19

URL	Date	SRC
http://www.redhat.com/support/errata/RHSA-2011-1820.html	2017-09-19
https://hermes.opensuse.org/messages/13195955	2017-09-19
https://access.redhat.com/security/cve/CVE-2011-4603	2011-12-14
https://bugzilla.redhat.com/show_bug.cgi?id=766446	2011-12-14

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"				<= 2.10.0 Search vendor "Pidgin" for product "Pidgin" and version " <= 2.10.0"		-		Affected
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"		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"		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"		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"		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"		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"		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"		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"		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"		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"		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"		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"		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"		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"		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"		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"		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"		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"		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"		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"		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"		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"		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"		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"		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"				2.6.3 Search vendor "Pidgin" for product "Pidgin" and version "2.6.3"		-		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"				2.7.1 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
Pidgin Search vendor "Pidgin"		Pidgin Search vendor "Pidgin" for product "Pidgin"				2.7.11 Search vendor "Pidgin" for product "Pidgin" and version "2.7.11"		-		Affected
Pidgin Search vendor "Pidgin"		Pidgin Search vendor "Pidgin" for product "Pidgin"				2.8.0 Search vendor "Pidgin" for product "Pidgin" and version "2.8.0"		-		Affected
Pidgin Search vendor "Pidgin"		Pidgin Search vendor "Pidgin" for product "Pidgin"				2.9.0 Search vendor "Pidgin" for product "Pidgin" and version "2.9.0"		-		Affected