The msn_slp_sip_recv function in libpurple/protocols/msn/slp.c in the MSN protocol plugin in libpurple in Pidgin before 2.6.2 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an SLP invite message that lacks certain required fields, as demonstrated by a malformed message from a KMess client.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| http://developer.pidgin.im/ticket/10159 | patch vendor advisory |
| http://secunia.com/advisories/36601 | third party advisory vendor advisory |
| http://www.pidgin.im/news/security/index.php?id=39 | patch vendor advisory |
| http://developer.pidgin.im/viewmtn/revision/diff/6d3fc30a0a0a379281efc5a6872a9c1d7c24c650/with/b4a95ea62b81a06ffc1993912471c511b786efdd/libpurple/protocols/msn/slp.c | patch vendor advisory |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11852 | vdb entry signature |
| http://www.securityfocus.com/bid/36277 | vdb entry |
| http://developer.pidgin.im/viewmtn/revision/info/b4a95ea62b81a06ffc1993912471c511b786efdd | patch vendor advisory |
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A6322 | vdb entry signature |