From security@caldera.com Thu Dec 13 00:50:04 2001 From: security@caldera.com To: bugtraq@securityfocus.com, announce@lists.caldera.com, scoannmod@xenitec.on.ca Date: Mon, 10 Dec 2001 17:42:10 -0800 Subject: Security Update: [CSSA-2001-SCO.39] Open UNIX, UnixWare 7: timed does not enforce nulls To: bugtraq@securityfocus.com announce@lists.caldera.com scoannmod@xenitec.on.ca ___________________________________________________________________________ Caldera International, Inc. Security Advisory Subject: Open UNIX, UnixWare 7: timed does not enforce nulls Advisory number: CSSA-2001-SCO.39 Issue date: 2001 December 10 Cross reference: ___________________________________________________________________________ 1. Problem Description The timed program does not enforce null-termination of strings in certain situations. It is possible that this could be used by a malicious user to perform a remote denial-of-service attack. 2. Vulnerable Versions Operating System Version Affected Files ------------------------------------------------------------------ UnixWare 7 All /usr/sbin/in.timed Open UNIX 8.0.0 /usr/sbin/in.timed 3. Workaround If the in.timed service is not needed, it may be disabled. 4. UnixWare 7, Open UNIX 8 4.1 Location of Fixed Binaries ftp://stage.caldera.com/pub/security/openunix/CSSA-2001-SCO.39/ 4.2 Verification md5 checksums: 87c68b618f4317dd92460aaa49e6a522 erg711890.Z md5 is available for download from ftp://stage.caldera.com/pub/security/tools/ 4.3 Installing Fixed Binaries Upgrade the affected binaries with the following commands: # uncompress /tmp/erg711890.Z # pkgadd -d /tmp/erg711890 5. References http://xforce.iss.net/static/6228.php http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2001-0388 This and other advisories are located at http://stage.caldera.com/support/security This advisory addresses Caldera Security internal incidents sr855196, fz519311, erg711890. 6. Disclaimer Caldera International, Inc. is not responsible for the misuse of any of the information we provide on our website and/or through our security advisories. Our advisories are a service to our customers intended to promote secure installation and use of Caldera International products. 7. Acknowledgements This vulnerability was discovered and researched by David A. Holland . ___________________________________________________________________________ [Part 2, Application/PGP-SIGNATURE 245bytes] [Unable to print this part]