bitlbee-libpurple before 3.5.1 allows remote attackers to cause a denial of service (NULL pointer dereference and crash) and possibly execute arbitrary code via a file transfer request for a contact that is not in the contact list. NOTE: this vulnerability exists because of an incomplete fix for CVE-2016-10189.
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Bitlbee | Bitlbee | * | 3.4.2 (including) |
| Bitlbee-libpurple | Bitlbee | * | 3.5 (including) |
| Bitlbee | Ubuntu | esm-apps/xenial | * |
| Bitlbee | Ubuntu | precise | * |
| Bitlbee | Ubuntu | trusty | * |
| Bitlbee | Ubuntu | upstream | * |
| Bitlbee | Ubuntu | xenial | * |
| Bitlbee | Ubuntu | yakkety | * |
Potential Mitigations
References
- http://www.openwall.com/lists/oss-security/2017/01/30/4
- http://www.openwall.com/lists/oss-security/2017/01/31/11
- http://www.securityfocus.com/bid/95932
- https://bugs.bitlbee.org/ticket/1282
- https://github.com/bitlbee/bitlbee/commit/30d598ce7cd3f136ee9d7097f39fa9818a272441
- http://www.openwall.com/lists/oss-security/2017/01/30/4
- http://www.openwall.com/lists/oss-security/2017/01/31/11
- http://www.securityfocus.com/bid/95932
- https://bugs.bitlbee.org/ticket/1282
- https://github.com/bitlbee/bitlbee/commit/30d598ce7cd3f136ee9d7097f39fa9818a272441