Joined: 17 Apr 2002
Location: Baltimore, MD
|Posted: Mon Mar 07, 2005 8:45 pm Post subject: [ GLSA 200503-14 ] KDE dcopidlng: Insecure temporary file cr
|Gentoo Linux Security Advisory
Title: KDE dcopidlng: Insecure temporary file creation (GLSA 200503-14)
Date: March 07, 2005
The dcopidlng script is vulnerable to symlink attacks, potentially allowing a local user to overwrite arbitrary files.
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.
Vulnerable: < 3.3.2-r5
Unaffected: >= 3.3.2-r5
Unaffected: >= 3.2.3-r7 < 3.2.4
Architectures: All supported architectures
Davide Madrisan has discovered that the dcopidlng script creates temporary files in a world-writable directory with predictable names.
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.
There is no known workaround at this time.
All kdelibs users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose kde-base/kdelibs
Last edited by GLSA on Sun Jul 30, 2006 4:17 am; edited 3 times in total