The (1) bundled GnuTLS SSL/TLS plugin and the (2) bundled OpenSSL SSL/TLS plugin in libpurple in Pidgin before 2.10.10 do not properly consider the Basic Constraints extension during verification of X.509 certificates from SSL servers, which allows man-in-the-middle attackers to spoof servers and obtain sensitive information via a crafted certificate.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Opensuse | Opensuse | 12.3 (including) | 12.3 (including) |
| Opensuse | Opensuse | 13.1 (including) | 13.1 (including) |
| Opensuse | Opensuse | 13.2 (including) | 13.2 (including) |
| Pidgin | Ubuntu | devel | * |
| Pidgin | Ubuntu | lucid | * |
| Pidgin | Ubuntu | precise | * |
| Pidgin | Ubuntu | trusty | * |
| Pidgin | Ubuntu | upstream | * |
| Pidgin | Ubuntu | utopic | * |
| Red Hat Enterprise Linux 7 | RedHat | pidgin-0:2.10.11-5.el7 | * |