CVE Database


Impact: Moderate
Public: 2011-09-29
Bugzilla: 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 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 Desktop Workstation version 5 (pidgin) RHSA-2011:1371 October 14, 2011
Red Hat Enterprise Linux Optional Productivity Applications version 5 (pidgin) RHSA-2011:1371 October 14, 2011
Red Hat Enterprise Linux version 4 (pidgin) RHSA-2011:1371 October 14, 2011

External References

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For clarification or corrections please contact the Red Hat Security Response Team.