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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

oval:org.mitre.oval:def:18005

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.

Family:
windows
Status:
ACCEPTED
Platform(s):
  • Microsoft Windows XP
  • Microsoft Windows Server 2008
  • Microsoft Windows 7
  • Microsoft Windows 8
  • Microsoft Windows Server 2003
  • Microsoft Windows Server 2008 R2
  • Microsoft Windows 2000
  • Microsoft Windows Vista
  • Microsoft Windows Server 2012
Class:
vulnerability
Reference(s):
  • CVE-2011-2943
Product(s):
  • Pidgin