Software: Yahoo! Messenger 5.x
Yahoo! Messenger 6.x
Secunia Research has discovered a vulnerability in Yahoo! Messenger, which can be exploited by malicious, local users to gain escalated privileges.
The vulnerability is caused due to a combination of weak default directory permissions and the Audio Setup Wizard (asw.dll) invoking the "ping.exe" utility insecurely during the connection testing phase. This can be exploited to execute arbitrary code with the privileges of another user by placing a malicious "ping.exe" file in the application's "Messenger" directory.
Successful exploitation requires that a user runs the Audio Setup Wizard and that the application has been installed in a non-default location (not as a subdirectory to the "Program Files" directory).
The vulnerability has been confirmed in version 220.127.116.110 for Windows. Other versions may also be affected.
Solution: Update to version 18.104.22.1681 or later.
Gaim Two Denial of Service Weaknesses
SECUNIA ADVISORY ID:
Two weaknesses have been reported in Gaim, which can be exploited by
malicious people to cause a DoS (Denial of Service).
1) An error within the parsing of received SNAC packets can be
exploited to cause a user's Gaim application to become unresponsive
when receiving specially crafted packets.
2) An error within the processing of HTML can be exploited to crash
the application when receiving specially crafted HTML.
Update to version 1.1.3.
PROVIDED AND/OR DISCOVERED BY:
Reported by vendor.