-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 KDE Security Advisory: Local DCOP denial of service vulnerability Original Release Date: 20050316 URL: http://www.kde.org/info/security/advisory-20050316-1.txt 0. References http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0396 1. Systems affected: All KDE version prior to KDE 3.4 on systems where multiple users have access. 2. Overview: Sebastian Krahmer of the SUSE LINUX Security Team reported a local denial of service vulnerability in KDE's Desktop Communication Protocol (DCOP) daemon better known as dcopserver. A local user can lock up the dcopserver of arbitrary other users on the same machine by stalling the DCOP authentication process. Although it is not possible to by pass the authentication process this way, it can cause a significant reduction in desktop functionality for the affected users. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2005-0396 to this issue. 3. Impact: A local user can lock up the dcopserver of arbitrary other users on the same machine. This can cause a significant reduction in desktop functionality for the affected users including, but not limited to, the inability to browse the internet and the inability to start new applications. 4. Solution: Upgrade to KDE 3.4. For older versions of KDE Source code patches have been made available which fix these vulnerabilities. Contact your OS vendor / binary package provider for information about how to obtain updated binary packages. 5. Patch: A patch for KDE 3.1.x is available from ftp://ftp.kde.org/pub/kde/security_patches 377c49d8224612fbf09f70f3c09d52f5 post-3.1.5-kdelibs-dcop.patch A patch for KDE 3.2.x is available from ftp://ftp.kde.org/pub/kde/security_patches 0948701bffb082c65784dc8a2b648ef0 post-3.2.3-kdelibs-dcop.patch A patch for KDE 3.3.x is available from ftp://ftp.kde.org/pub/kde/security_patches 7309e259ae1f29be08bbb70e580da3fb post-3.3.2-kdelibs-dcop.patch 6. Time line and credits: 21/02/2005 KDE Security informed by SUSE LINUX. 21/02/2005 Patches applied to KDE CVS. 02/03/2005 Vendors notified 16/03/2005 KDE Security Advisory released. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (GNU/Linux) iD8DBQFCOBbvN4pvrENfboIRAsQvAJ9FM5bL5Df4JgklNr3v5u6uOdLUDACeLBTE s+amHw7dStDCkECtiKr5G5U= =TiOt -----END PGP SIGNATURE-----