CVE-2011-3594 – libpurple: invalid UTF-8 string handling in SILC messages

https://notcve.org/view.php?id=CVE-2011-3594

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. La función g_markup_escape_text en el complemento de protocolo SILC en libpurple v2.10.0 y anteriores, como se usa en Pidgin y posiblemente en otros productos, permite a atacantes remotos provocar una denegación de servicio (caída) a través de secuencias UTF-8 inválidas que disparan el uso de punteros no válidos y lectura fuera de los límites, relacionado con interacciones con ciertas versiones de glib2 • 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 • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer •