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

http://security.gentoo.org/

Severity:	normal
Title:	KDE dcopidlng: Insecure temporary file creation
Date:	03/07/2005
Bugs:	#81652
ID:	200503-14

Synopsis

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

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.

Affected packages

Package	Vulnerable	Unaffected	Architecture(s)
kde-base/kdelibs	< 3.3.2-r5	>= 3.3.2-r5	All supported architectures

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

CAN-2005-0365

Availability

This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200503-14.xml

Concerns?

Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security@gentoo.org or alternatively, you may file a bug at https://bugs.gentoo.org.