Pidgin up to 2.10.9 SSL/TLS cryptographic issues

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability has been found in Pidgin up to 2.10.9 (Messaging Software) and classified as problematic. Affected by this vulnerability is some unknown processing of the component SSL/TLS Handler. The manipulation with an unknown input leads to a cryptographic issues vulnerability. The CWE definition for the vulnerability is CWE-310. As an impact it is known to affect integrity.

The weakness was presented 10/22/2014 by Jacob Appelbaum with Tor Project as confirmed advisory (Website). The advisory is shared at This vulnerability is known as CVE-2014-3694 since 05/14/2014. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1600 for this issue. The advisory points out:

Both of libpurple's bundled SSL/TLS plugins (one for GnuTLS and one for NSS) failed to check that the Basic Constraints extension allowed intermediate certificates to act as CAs. This allowed anyone with any valid certificate to create a fake certificate for any arbitrary domain and Pidgin would trust it.

The vulnerability scanner Nessus provides a plugin with the ID 79093 (Fedora 21 : pidgin-2.10.10-2.fc21 (2014-14112)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157502 (Oracle Enterprise Linux Security Update for pidgin (ELSA-2017-1854)).

Upgrading to version 2.10.10 eliminates this vulnerability. The upgrade is hosted for download at A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

Both bundled plugins were changed to check the Basic Constraints extension on all intermediate CA certificates.

The vulnerability is also documented in the databases at X-Force (97730), Tenable (79093), SecurityFocus (BID 70701†), Secunia (SA60741†) and Vulnerability Center (SBV-46831†).






CPE 2.3info

CPE 2.2info


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VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
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Class: Cryptographic issues
CWE: CWE-310

Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

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Nessus ID: 79093
Nessus Name: Fedora 21 : pidgin-2.10.10-2.fc21 (2014-14112)
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OpenVAS ID: 703055
OpenVAS Name: Debian Security Advisory DSA 3055-1 (pidgin - security update)
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Threat Intelligenceinfo

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Recommended: Upgrade
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Upgrade: Pidgin 2.10.10


05/14/2014 🔍
10/22/2014 +161 days 🔍
10/22/2014 +0 days 🔍
10/22/2014 +0 days 🔍
10/22/2014 +0 days 🔍
10/24/2014 +2 days 🔍
10/27/2014 +3 days 🔍
10/29/2014 +2 days 🔍
10/30/2014 +1 days 🔍
11/11/2014 +12 days 🔍
02/23/2022 +2661 days 🔍


Advisory: RHSA-2017:1854
Researcher: Jacob Appelbaum
Organization: Tor Project
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-3694 (🔍)

X-Force: 97730 - Pidgin SSL security bypass, Medium Risk
SecurityFocus: 70701 - Pidgin CVE-2014-3694 SSL Certificate Validation Security Bypass Vulnerability
Secunia: 60741 - Debian update for pidgin, Moderately Critical
Vulnerability Center: 46831 - Pidgin Prior to 2.10.10 Remote Spoofing and Information Disclosure via Fake Certificates, Medium


Created: 10/24/2014 10:55 AM
Updated: 02/23/2022 04:07 PM
Changes: 10/24/2014 10:55 AM (85), 06/10/2017 09:49 AM (3), 02/23/2022 04:01 PM (4), 02/23/2022 04:07 PM (1)
Complete: 🔍
Cache ID: 35:015:40


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