Ilja van Sprundel has reported a vulnerability in kcheckpass, which potentially can be exploited by malicious, local users to gain escalated privileges.
The vulnerability is caused due to the insecure creation of the lock file in "/var/lock" by kcheckpass.c. This can be exploited via symlink attacks to create or overwrite arbitrary files with the privileges of the user running the affected application.
Successful exploitation requires that the directory "/var/lock" is writable.
The vulnerability affects KDE versions 3.2.0 through 3.4.2.
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Subject: KDE kcheckpass Insecure Lock File Creation Vulnerability
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