Denial of Service Vulnerability in Pidgin IRC Protocol Plugin

CVE-2011-2943 · MEDIUM Severity

AV:N/AC:M/AU:N/C:N/I:N/A:P

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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