kpopup -- local root exploit and local denial of service

Mitre CVE reports:

Format string vulnerability in main.cpp in kpopup
0.9.1-0.9.5pre2 allows local users to cause a denial of
service (segmentation fault) and possibly execute
arbitrary code via format string specifiers in command
line arguments.

misc.cpp in KPopup 0.9.1 trusts the PATH variable when
executing killall, which allows local users to elevate
their privileges by modifying the PATH variable to
reference a malicious killall program.

SecurityFocus credits “b0f” [email protected]