Pidgin 2.10.7 libX11 Overly Long Tooltip input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Pidgin 2.10.7. The impacted element is an unknown function of the component libX11. The manipulation as part of Overly Long Tooltip leads to input validation. This vulnerability is uniquely identified as CVE-2013-6478. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Pidgin 2.10.7 (Messaging Software). This issue affects an unknown code of the component libX11. The manipulation as part of a Overly Long Tooltip leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is availability. The summary by CVE is:

gtkimhtml.c in Pidgin before 2.10.8 does not properly interact with underlying library support for wide Pango layouts, which allows user-assisted remote attackers to cause a denial of service (application crash) via a long URL that is examined with a tooltip.

The weakness was disclosed 01/28/2014 by Coverity static analysis (acer.aspire.one.110) with Coverity static analysis as Crash when hovering pointer over a long URL as confirmed advisory (Website). It is possible to read the advisory at pidgin.im. The identification of this vulnerability is CVE-2013-6478 since 11/04/2013. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 72352 (CentOS 5 / 6 : pidgin (CESA-2014:0139)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CentOS Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175276 (Debian Security Update for pidgin (DSA-2859-1)).

Upgrading to version 2.10.8 eliminates this vulnerability. The upgrade is hosted for download at hg.pidgin.im. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

Only display the first 200 characters of the URL in the tooltip.

The vulnerability is also documented in the databases at X-Force (91297), Tenable (72352), SecurityFocus (BID 65492†), OSVDB (102615†) and Vulnerability Center (SBV-43174†). linux-magazin.de is providing further details. The entries VDB-12106, VDB-12108, VDB-12109 and VDB-12110 are pretty similar. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 6.5

VulDB Base Score: 7.5
VulDB Temp Score: 6.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 72352
Nessus Name: CentOS 5 / 6 : pidgin (CESA-2014:0139)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 702859
OpenVAS Name: Debian Security Advisory DSA 2859-1 (pidgin - several vulnerabilities
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: Pidgin 2.10.8

Timelineinfo

11/04/2013 🔍
01/28/2014 +85 days 🔍
01/28/2014 +0 days 🔍
01/31/2014 +3 days 🔍
02/04/2014 +4 days 🔍
02/06/2014 +2 days 🔍
02/06/2014 +0 days 🔍
02/06/2014 +0 days 🔍
06/08/2021 +2679 days 🔍

Sourcesinfo

Advisory: Crash when hovering pointer over a long URL
Researcher: Coverity static analysis (acer.aspire.one.110)
Organization: Coverity static analysis
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2013-6478 (🔍)
GCVE (CVE): GCVE-0-2013-6478
GCVE (VulDB): GCVE-100-12107

OVAL: 🔍

X-Force: 91297 - Pidgin gtkimhtml.c denial of service, Medium Risk
SecurityFocus: 65492 - Pidgin 'libpurple' Multiple Denial of Service Vulnerabilities
OSVDB: 102615
Vulnerability Center: 43174 - Pidgin Prior to 2.10.8 Remote DoS Vulnerability due to an Error in libX11 - CVE-2013-6478, Medium

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 01/31/2014 10:17
Updated: 06/08/2021 19:18
Changes: 01/31/2014 10:17 (76), 05/20/2017 10:28 (12), 06/08/2021 19:18 (3)
Complete: 🔍
Cache ID: 216:4AF:103

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