RedHat Security Advisory for mars_nwe released.

Synopsis: Buffer overflow in mars_nwe Advisory ID: RHSA-1999:037-01 Issue date: 1999-09-13 Updated on: Keywords: mars_nwe buffer Cross references: ---------------------------------------------------------------------

1. Topic:

There are several buffer overruns in the mars_nwe package.

2. Bug IDs fixed (http://developer.redhat.com/bugzilla for more info):

5002

3. Relevant releases/architectures:

Red Hat Linux 6.0, all architectures Red Hat Linux 4.2, 5.2 Intel (mars_nwe was not built for Alpha and Sparc in previous versions of Red Hat Linux.)

4. Obsoleted by:

5. Conflicts with:

6. RPMs required:

Red Hat Linux 4.2:

Intel: ftp://updates.redhat.com//4.2/i386/mars-nwe-0.99pl17-0.4.2.i386.rpm

Source packages: ftp://updates.redhat.com//4.2/SRPMS/mars-nwe-0.99pl17-0.4.2.src.rpm

Red Hat Linux 5.2:

Intel: ftp://updates.redhat.com//5.2/i386/mars-nwe-0.99pl17-0.5.2.i386.rpm

Source packages: ftp://updates.redhat.com//5.2/SRPMS/mars-nwe-0.99pl17-0.5.2.src.rpm

Red Hat Linux 6.0:

Intel: ftp://updates.redhat.com//6.0/i386/mars-nwe-0.99pl17-4.i386.rpm

Alpha: ftp://updates.redhat.com//6.0/alpha/mars-nwe-0.99pl17-4.alpha.rpm

Sparc: ftp://updates.redhat.com//6.0/sparc/mars-nwe-0.99pl17-4.sparc.rpm

Source packages: ftp://updates.redhat.com//6.0/SRPMS/mars-nwe-0.99pl17-4.src.rpm

7. Problem description:

Buffer overflows are present in the mars_nwe package. Since the code that contains these overflows is run as root, a local root compromise is possible if users create carefully designed directories and/or bindery objects.

A sample exploit has been made available.

Thanks go to Przemyslaw Frasunek (secure@freebsdf.lublin.pl) and Babcia Padlina Ltd. for noting the problem and providing a patch.

8. Solution:

For each RPM for your particular architecture, run:

rpm -Uvh

where filename is the name of the RPM.

9. Verification:

MD5 sum Package Name -------------------------------------------------------------------------- 350882fd246344891f04d7419561eb8f i386/mars-nwe-0.99pl17-0.4.2.i386.rpm 99134c2f507c906483320b9748b6334c SRPMS/mars-nwe-0.99pl17-0.4.2.src.rpm

2dd6f7cf55f8ed68ba40b9d98a91adaf i386/mars-nwe-0.99pl17-0.5.2.i386.rpm e3d918c4e52ef051d169d7380e4d8cfe SRPMS/mars-nwe-0.99pl17-0.5.2.src.rpm

adbd809d9de3d22fed637bcf56ede66f i386/mars-nwe-0.99pl17-4.i386.rpm 729f888a3c1ebb87bcf04c204bf7b9dc alpha/mars-nwe-0.99pl17-4.alpha.rpm bf73f67c225c2edce4d7ee52b5796803 sparc/mars-nwe-0.99pl17-4.sparc.rpm b9c61129b2e04d25c48863ededc35568 SRPMS/mars-nwe-0.99pl17-4.src.rpm

These packages are PGP signed by Red Hat Inc. for security. Our key is available at:

http://www.redhat.com/corp/contact.html

You can verify each package with the following command:

rpm --checksig

If you only wish to verify that each package has not been corrupted or tampered with, examine only the md5sum with the following command:

rpm --checksig --nopgp

10. References:

Bugtraq ID: 617 <19990830200449.54656.qmail@lagoon.FreeBSD.lublin.pl>