Pidgin up to 2.7.10 Yahoo! Protocol Plugin libymsg.c null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Pidgin. It has been classified as problematic. Impacted is an unknown function of the file libymsg.c of the component Yahoo! Protocol Plugin. The manipulation leads to null pointer dereference. This vulnerability is documented as CVE-2011-1091. There is not any exploit available.

Detailsinfo

A vulnerability was found in Pidgin (Messaging Software) and classified as problematic. This issue affects an unknown code block of the file libymsg.c of the component Yahoo! Protocol Plugin. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. The summary by CVE is:

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.

The weakness was released 03/14/2011 (Website). It is possible to read the advisory at pidgin.im. The identification of this vulnerability is CVE-2011-1091 since 02/24/2011. The exploitation is known to be easy. The attack may be initiated remotely. The requirement for exploitation is a simple authentication. Technical details of the vulnerability are known, but there is no available exploit.

It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 68369 (Oracle Linux 4 : pidgin (ELSA-2011-1371)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 120535 (Solaris Multiple Vulnerabilities in Pidgin).

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 (66055), Tenable (68369), SecurityFocus (BID 46837†), Secunia (SA43695†) and Vulnerability Center (SBV-30602†). Entries connected to this vulnerability are available at VDB-4402, VDB-55936, VDB-61515 and VDB-60433. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Proof-of-Concept

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 68369
Nessus Name: Oracle Linux 4 : pidgin (ELSA-2011-1371)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 69344
OpenVAS Name: Slackware Advisory SSA:2011-070-02 pidgin
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/24/2011 🔍
03/11/2011 +15 days 🔍
03/11/2011 +0 days 🔍
03/14/2011 +3 days 🔍
03/14/2011 +0 days 🔍
03/14/2011 +0 days 🔍
03/22/2011 +8 days 🔍
07/12/2013 +843 days 🔍
03/20/2015 +616 days 🔍
10/19/2021 +2405 days 🔍

Sourcesinfo

Advisory: RHSA-2011:1371
Status: Not defined
Confirmation: 🔍

CVE: CVE-2011-1091 (🔍)
GCVE (CVE): GCVE-0-2011-1091
GCVE (VulDB): GCVE-100-56831

OVAL: 🔍

X-Force: 66055
SecurityFocus: 46837 - Libpurple Yahoo Protocol 'YMSG' NULL Pointer Dereference Denial of Service Vulnerability
Secunia: 43695 - Pidgin YMSG Denial of Service Weakness, Not Critical
Vulnerability Center: 30602 - Pidgin Libpurple 2.6.0 - 2.7.10 Yahoo! Protocol Plugin Remote DoS Vulnerability, Medium
Vupen: ADV-2011-0643

See also: 🔍

Entryinfo

Created: 03/20/2015 16:16
Updated: 10/19/2021 15:30
Changes: 03/20/2015 16:16 (64), 03/19/2017 20:34 (14), 10/19/2021 15:24 (3), 10/19/2021 15:30 (2)
Complete: 🔍
Cache ID: 216::103

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