| Package | Affected versions | Patched versions |
|---|---|---|
| libpurple | = 2.8.0= 2.9.0 | |
| pidgin | = 2.0.0= 2.0.1= 2.0.2= 2.1.0= 2.1.1= 2.2.0= 2.2.1= 2.2.2= 2.3.0= 2.3.1= 2.4.0= 2.4.1= 2.4.2= 2.4.3= 2.5.0= 2.5.1= 2.5.2= 2.5.3= 2.5.4= 2.5.5= 2.5.6= 2.5.7= 2.5.8= 2.5.9= 2.6.0= 2.6.1= 2.6.2= 2.6.4= 2.6.5= 2.6.6= 2.7.0= 2.7.1= 2.7.10= 2.7.11= 2.7.2= 2.7.3= 2.7.4= 2.7.5= 2.7.6= 2.7.7= 2.7.8= 2.7.9= 2.8.0≤ 2.9.0 |
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.
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