Protect yourself against future threats.
-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2002.026 -- RHSA-2002:004-06 New groff packages available to fix security problems 18 January 2002 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: groff Vendor: Red Hat Operating System: Red Hat Linux 7.0 Red Hat Linux 7.1 Red Hat Linux 7.2 Platform: Alpha i386 IA-64 Impact: Increased Privileges Access Required: Remote - --------------------------BEGIN INCLUDED TEXT-------------------- - --------------------------------------------------------------------- Red Hat, Inc. Red Hat Security Advisory Synopsis: New groff packages available to fix security problems Advisory ID: RHSA-2002:004-06 Issue date: 2002-01-07 Updated on: 2002-01-14 Product: Red Hat Linux Keywords: groff security Cross references: Obsoletes: - --------------------------------------------------------------------- 1. Topic: New groff packages have been made available that fix an overflow in groff. If the printing system running this is a security issue, it is recommended to update to the new, fixed packages. 2. Relevant releases/architectures: Red Hat Linux 7.0 - alpha, i386 Red Hat Linux 7.1 - alpha, i386, ia64 Red Hat Linux 7.2 - i386, ia64 3. Problem description: Groff is a document formatting system. The groff preprocessor contains an exploitable buffer overflow. If groff can be invoked within the LPRng printing system, an attacker can gain rights as the "lp" user. Remote exploitation may be possible if lpd is running and is accessible remotely, and the attacker knows the name of the printer and spoolfile. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2002-0003 to this issue. Thanks to zen-parse for bringing this bug to our attention. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. To update all RPMs for your particular architecture, run: rpm -Fvh [filenames] where [filenames] is a list of the RPMs you wish to upgrade. Only those RPMs which are currently installed will be updated. Those RPMs which are not installed but included in the list will not be updated. Note that you can also use wildcards (*.rpm) if your current directory *only* contains the desired RPMs. Please note that this update is also available via Red Hat Network. Many people find this an easier way to apply updates. To use Red Hat Network, launch the Red Hat Update Agent with the following command: up2date This will start an interactive process that will result in the appropriate RPMs being upgraded on your system. 5. Bug IDs fixed (http://bugzilla.redhat.com/bugzilla for more info): 6. RPMs required: Red Hat Linux 7.0: SRPMS: ftp://updates.redhat.com/7.0/en/os/SRPMS/groff-1.16-7.1.src.rpm alpha: ftp://updates.redhat.com/7.0/en/os/alpha/groff-1.16-7.1.alpha.rpm i386: ftp://updates.redhat.com/7.0/en/os/i386/groff-1.16-7.1.i386.rpm Red Hat Linux 7.1: SRPMS: ftp://updates.redhat.com/7.1/en/os/SRPMS/groff-1.17.2-7.0.2.src.rpm alpha: ftp://updates.redhat.com/7.1/en/os/alpha/groff-1.17.2-7.0.2.alpha.rpm i386: ftp://updates.redhat.com/7.1/en/os/i386/groff-1.17.2-7.0.2.i386.rpm ia64: ftp://updates.redhat.com/7.1/en/os/ia64/groff-1.17.2-7.0.2.ia64.rpm Red Hat Linux 7.2: SRPMS: ftp://updates.redhat.com/7.2/en/os/SRPMS/groff-1.17.2-7.0.2.src.rpm i386: ftp://updates.redhat.com/7.2/en/os/i386/groff-1.17.2-7.0.2.i386.rpm ia64: ftp://updates.redhat.com/7.2/en/os/ia64/groff-1.17.2-7.0.2.ia64.rpm 7. Verification: MD5 sum Package Name - -------------------------------------------------------------------------- 4fe878d0720088830c29954d25c9e032 7.0/en/os/SRPMS/groff-1.16-7.1.src.rpm b37f80ae0a4e6ad49b3d697376cfdde2 7.0/en/os/alpha/groff-1.16-7.1.alpha.rpm 6e7cfc9cf998ac9a6a6401d627acdea4 7.0/en/os/i386/groff-1.16-7.1.i386.rpm 1d4e9b5068fcf178ddacf032c0db523d 7.1/en/os/SRPMS/groff-1.17.2-7.0.2.src.rpm 93cbf905335c1474ed9e632c0ec83738 7.1/en/os/alpha/groff-1.17.2-7.0.2.alpha.rpm f3181dd6c32ffc9478721244b77c89af 7.1/en/os/i386/groff-1.17.2-7.0.2.i386.rpm 4f08644532e54b8c3553b04148424e56 7.1/en/os/ia64/groff-1.17.2-7.0.2.ia64.rpm 1d4e9b5068fcf178ddacf032c0db523d 7.2/en/os/SRPMS/groff-1.17.2-7.0.2.src.rpm f3181dd6c32ffc9478721244b77c89af 7.2/en/os/i386/groff-1.17.2-7.0.2.i386.rpm 4f08644532e54b8c3553b04148424e56 7.2/en/os/ia64/groff-1.17.2-7.0.2.ia64.rpm These packages are GPG signed by Red Hat, Inc. for security. Our key is available at: http://www.redhat.com/about/contact/pgpkey.html You can verify each package with the following command: rpm --checksig <filename> 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 --nogpg <filename> 8. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2002-0003 Copyright(c) 2000, 2001, 2002 Red Hat, Inc - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to auscert@auscert.org.au and we will forward your request to the appropriate person. This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to use any or all of this information is the responsibility of each user or organisation, and should be done so in accordance with site policies and procedures. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the original authors to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/Information/advisories.html If you believe that your system has been compromised, contact AusCERT or your representative in FIRST (Forum of Incident Response and Security Teams). Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for emergencies. -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv Comment: ftp://ftp.auscert.org.au/pub/auscert/AUSCERT_PGP.key iQCVAwUBPEgsSCh9+71yA2DNAQG14wQAlO9vl1mAHlvlMjQv99jSqK3cxtri5i+O LlL0rVJEnxu5ZL23zeXa04sJBzCBZ8TlIzkVRc+qrGzx85o6xCeS7jfIBj7kVril kcup4MzCQMwHiXa4jkXK/unUb1oWojmJ0FxeFXt7+ggm5AdN96EYV1zxfHZ7DiFn JlzG8PYmWow= =kPYw -----END PGP SIGNATURE-----