The irc_msg_who function in msgs.c in the IRC protocol plugin in libpurple 2.8.0 through 2.9.0 in Pidgin before 2.10.0 does not properly validate characters in nicknames, which allows user-assisted remote attackers to cause a denial of service (NULL pointer dereference and application crash) via a crafted nickname that is not properly handled in a WHO response.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Libpurple | Pidgin | 2.8.0 (including) | 2.8.0 (including) |
| Libpurple | Pidgin | 2.9.0 (including) | 2.9.0 (including) |
| Pidgin | Pidgin | * | 2.9.0 (including) |
| Pidgin | Pidgin | 2.0.0 (including) | 2.0.0 (including) |
| Pidgin | Pidgin | 2.0.1 (including) | 2.0.1 (including) |
| Pidgin | Pidgin | 2.0.2 (including) | 2.0.2 (including) |
| Pidgin | Pidgin | 2.1.0 (including) | 2.1.0 (including) |
| Pidgin | Pidgin | 2.1.1 (including) | 2.1.1 (including) |
| Pidgin | Pidgin | 2.2.0 (including) | 2.2.0 (including) |
| Pidgin | Pidgin | 2.2.1 (including) | 2.2.1 (including) |
| Pidgin | Pidgin | 2.2.2 (including) | 2.2.2 (including) |
| Pidgin | Pidgin | 2.3.0 (including) | 2.3.0 (including) |
| Pidgin | Pidgin | 2.3.1 (including) | 2.3.1 (including) |
| Pidgin | Pidgin | 2.4.0 (including) | 2.4.0 (including) |
| Pidgin | Pidgin | 2.4.1 (including) | 2.4.1 (including) |
| Pidgin | Pidgin | 2.4.2 (including) | 2.4.2 (including) |
| Pidgin | Pidgin | 2.4.3 (including) | 2.4.3 (including) |
| Pidgin | Pidgin | 2.5.0 (including) | 2.5.0 (including) |
| Pidgin | Pidgin | 2.5.1 (including) | 2.5.1 (including) |
| Pidgin | Pidgin | 2.5.2 (including) | 2.5.2 (including) |
| Pidgin | Pidgin | 2.5.3 (including) | 2.5.3 (including) |
| Pidgin | Pidgin | 2.5.4 (including) | 2.5.4 (including) |
| Pidgin | Pidgin | 2.5.5 (including) | 2.5.5 (including) |
| Pidgin | Pidgin | 2.5.6 (including) | 2.5.6 (including) |
| Pidgin | Pidgin | 2.5.7 (including) | 2.5.7 (including) |
| Pidgin | Pidgin | 2.5.8 (including) | 2.5.8 (including) |
| Pidgin | Pidgin | 2.5.9 (including) | 2.5.9 (including) |
| Pidgin | Pidgin | 2.6.0 (including) | 2.6.0 (including) |
| Pidgin | Pidgin | 2.6.1 (including) | 2.6.1 (including) |
| Pidgin | Pidgin | 2.6.2 (including) | 2.6.2 (including) |
| Pidgin | Pidgin | 2.6.4 (including) | 2.6.4 (including) |
| Pidgin | Pidgin | 2.6.5 (including) | 2.6.5 (including) |
| Pidgin | Pidgin | 2.6.6 (including) | 2.6.6 (including) |
| Pidgin | Pidgin | 2.7.0 (including) | 2.7.0 (including) |
| Pidgin | Pidgin | 2.7.1 (including) | 2.7.1 (including) |
| Pidgin | Pidgin | 2.7.2 (including) | 2.7.2 (including) |
| Pidgin | Pidgin | 2.7.3 (including) | 2.7.3 (including) |
| Pidgin | Pidgin | 2.7.4 (including) | 2.7.4 (including) |
| Pidgin | Pidgin | 2.7.5 (including) | 2.7.5 (including) |
| Pidgin | Pidgin | 2.7.6 (including) | 2.7.6 (including) |
| Pidgin | Pidgin | 2.7.7 (including) | 2.7.7 (including) |
| Pidgin | Pidgin | 2.7.8 (including) | 2.7.8 (including) |
| Pidgin | Pidgin | 2.7.9 (including) | 2.7.9 (including) |
| Pidgin | Pidgin | 2.7.10 (including) | 2.7.10 (including) |
| Pidgin | Pidgin | 2.7.11 (including) | 2.7.11 (including) |
| Pidgin | Pidgin | 2.8.0 (including) | 2.8.0 (including) |