KDE dcopidlng: Insecure temporary file creation — GLSA 200503-14

The dcopidlng script is vulnerable to symlink attacks, potentially allowing a local user to overwrite arbitrary files.

Affected Packages

kde-base/kdelibs on all architectures
Affected versions < 3.3.2-r5
Unaffected versions >= 3.3.2-r5, revision >= 3.2.3-r7

Background

KDE is a feature-rich graphical desktop environment for Linux and Unix-like Operating Systems. DCOP is KDE's simple IPC/RPC mechanism. dcopidlng is a DCOP helper script.

Description

Davide Madrisan has discovered that the dcopidlng script creates temporary files in a world-writable directory with predictable names.

Impact

A local attacker could create symbolic links in the temporary files directory, pointing to a valid file somewhere on the filesystem. When dcopidlng is executed, this would result in the file being overwritten with the rights of the user running the utility, which could be the root user.

Workaround

There is no known workaround at this time.

Resolution

All kdelibs users should upgrade to the latest version:

 # emerge --sync
 # emerge --ask --oneshot --verbose kde-base/kdelibs

References

Release Date
March 07, 2005

Latest Revision
March 07, 2005: 01

Severity
normal

Exploitable
local

Bugzilla entries