Public Date:
743481: CVE-2011-3594 libpurple: invalid UTF-8 string handling in SILC messages

The MITRE CVE dictionary describes this issue as:

The g_markup_escape_text function in the SILC protocol plug-in in libpurple 2.10.0 and earlier, as used in Pidgin and possibly other products, allows remote attackers to cause a denial of service (crash) via invalid UTF-8 sequences that trigger use of invalid pointers and an out-of-bounds read, related to interactions with certain versions of glib2.

Find out more about CVE-2011-3594 from the MITRE CVE dictionary dictionary and NIST NVD.


Not vulnerable. This issue did not affect the version of pidgin as shipped with Red Hat Enterprise Linux 6 as it explicitly disables support for the SILC protocol.

CVSS v2 metrics

Base Score 4.3
Base Metrics AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial

Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).

Red Hat Security Errata

Platform Errata Release Date
Red Hat Enterprise Linux Optional Productivity Applications (v. 5 server) (pidgin) RHSA-2011:1371 2011-10-14
Red Hat Enterprise Linux 4 (pidgin) RHSA-2011:1371 2011-10-14
Red Hat Enterprise Linux 5 (pidgin) RHSA-2011:1371 2011-10-14

Affected Packages State

Platform Package State
Red Hat Enterprise Linux 6 pidgin Not affected


Last Modified

CVE description copyright © 2017, The MITRE Corporation