Pidgin MSN Emoticon Denial Of Service Vulnerability
29 Apr. 2012
Summary
The msn_emoticon_msg function in slp.c in the MSN protocol plugin in libpurple in Pidgin before 2.7.0 allows remote authenticated users to cause a denial of service (NULL pointer dereference and application crash) via a custom emoticon in a malformed SLP message.
Credit:
The information has been provided by Pierre Nogu s.
A vulnerability was discovered in libpurple's MSN protocol plugin that can cause a denial of service (crash) due to insufficient validation of certain SLP packets related to custom emoticons. An attacker could use this vulnerability to remotely crash a client using libpurple for MSN. It is not possible for this vulnerability to be exploited for code execution. As a workaround, disabling custom emoticons on MSN accounts will prevent the vulnerability.
Vendor Status:
Pidgin had issued an update for this vulnerability
