CVE-2011-3594

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 3.2% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2011-11-04 · updated 2026-06-16
Weakness: CWE-119

Description

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.

Affected products

Pidgin Libpurple: through 2.10.0; 1.0, 2.0.0, 2.0.1, 2.0.2, 2.1.0, 2.1.1 (+40)
Pidgin: all versions

References

http://developer.pidgin.im/ticket/14636
http://developer.pidgin.im/viewmtn/revision/diff/be5e66abad2af29604bc794cc4c6600ab12751f3/with/7eb1f6d56cc58bbb5b56b7df53955d36b9b419b8
http://pidgin.im/news/security/?id=56
http://secunia.com/advisories/46376
http://www.mandriva.com/security/advisories?name=MDVSA-2011:183
http://www.redhat.com/support/errata/RHSA-2011-1371.html
https://bugzilla.redhat.com/show_bug.cgi?id=743481
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18034
http://developer.pidgin.im/ticket/14636
http://developer.pidgin.im/viewmtn/revision/diff/be5e66abad2af29604bc794cc4c6600ab12751f3/with/7eb1f6d56cc58bbb5b56b7df53955d36b9b419b8
http://pidgin.im/news/security/?id=56
http://secunia.com/advisories/46376

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