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.
2009-09-08T18:30:00.360
2025-04-09T00:30:58.490
Deferred
CVSSv2: 5.0 (MEDIUM)
AV:N/AC:L/Au:N/C:N/I:N/A:P
10.0
2.9
| Type | Vendor | Product | Version/Range | Vulnerable? |
|---|---|---|---|---|
| Application | pidgin | libpurple | * | Yes |
| Application | pidgin | pidgin | ≤ 2.6.1 | Yes |
| Application | pidgin | pidgin | 2.0.0 | Yes |
| Application | pidgin | pidgin | 2.0.1 | Yes |
| Application | pidgin | pidgin | 2.0.2 | Yes |
| Application | pidgin | pidgin | 2.0.2 | Yes |
| Application | pidgin | pidgin | 2.1.0 | Yes |
| Application | pidgin | pidgin | 2.1.1 | Yes |
| Application | pidgin | pidgin | 2.2.0 | Yes |
| Application | pidgin | pidgin | 2.2.1 | Yes |
| Application | pidgin | pidgin | 2.2.2 | Yes |
| Application | pidgin | pidgin | 2.3.0 | Yes |
| Application | pidgin | pidgin | 2.3.1 | Yes |
| Application | pidgin | pidgin | 2.4.0 | Yes |
| Application | pidgin | pidgin | 2.4.0 | Yes |
| Application | pidgin | pidgin | 2.4.1 | Yes |
| Application | pidgin | pidgin | 2.4.1 | Yes |
| Application | pidgin | pidgin | 2.4.2 | Yes |
| Application | pidgin | pidgin | 2.4.2 | Yes |
| Application | pidgin | pidgin | 2.4.3 | Yes |
| Application | pidgin | pidgin | 2.4.3 | Yes |
| Application | pidgin | pidgin | 2.5.0 | Yes |
| Application | pidgin | pidgin | 2.5.0 | Yes |
| Application | pidgin | pidgin | 2.5.1 | Yes |
| Application | pidgin | pidgin | 2.5.2 | Yes |
| Application | pidgin | pidgin | 2.5.2 | Yes |
| Application | pidgin | pidgin | 2.5.3 | Yes |
| Application | pidgin | pidgin | 2.5.3 | Yes |
| Application | pidgin | pidgin | 2.5.4 | Yes |
| Application | pidgin | pidgin | 2.5.4 | Yes |
| Application | pidgin | pidgin | 2.5.5 | Yes |
| Application | pidgin | pidgin | 2.5.5 | Yes |
| Application | pidgin | pidgin | 2.5.6 | Yes |
| Application | pidgin | pidgin | 2.5.7 | Yes |
| Application | pidgin | pidgin | 2.5.8 | Yes |
| Application | pidgin | pidgin | 2.5.9 | Yes |
| Application | pidgin | pidgin | 2.6.0 | Yes |