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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2003.0038 -- RHSA-2003:012-07 Updated CVS packages available 22 January 2003 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: CVS Vendor: Red Hat Operating System: Red Hat Linux 8.0 Red Hat Linux 7.x Red Hat Linux 6.2 Linux Platform: i386 IA-64 Impact: Execute Arbitrary Code/Commands Access Required: Remote - --------------------------BEGIN INCLUDED TEXT-------------------- - --------------------------------------------------------------------- Red Hat, Inc. Red Hat Security Advisory Synopsis: Updated CVS packages available Advisory ID: RHSA-2003:012-07 Issue date: 2003-01-20 Updated on: 2003-01-20 Product: Red Hat Linux Keywords: cvs double-free Cross references: Obsoletes: CVE Names: CAN-2003-0015 - --------------------------------------------------------------------- 1. Topic: Updated cvs packages are now available for Red Hat Linux 6.2, 7, 7.1, 7.2, 7.3, and 8.0. These updates close a vulnerability which would permit arbitrary command execution on servers configured to allow anonymous read-only access. 2. Relevant releases/architectures: Red Hat Linux 6.2 - i386 Red Hat Linux 7.0 - i386 Red Hat Linux 7.1 - i386 Red Hat Linux 7.2 - i386, ia64 Red Hat Linux 7.3 - i386 Red Hat Linux 8.0 - i386 3. Problem description: CVS is a version control system frequently used to manage source code repositories. During an audit of the CVS sources, Stefan Esser discovered an exploitable double-free bug in the CVS server. On servers which are configured to allow anonymous read-only access, this bug could be used by anonymous users to gain write privileges. Users with CVS write privileges can then use the Update-prog and Checkin-prog features to execute arbitrary commands on the server. All users of CVS are advised to upgrade to these erratum packages which contain patches to correct the double-free bug. Our thanks go to Stefan Esser of e-matters for reporting this issue to us. 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. RPMs required: Red Hat Linux 6.2: SRPMS: ftp://updates.redhat.com/6.2/en/os/SRPMS/cvs-1.11.1p1-8.6.src.rpm i386: ftp://updates.redhat.com/6.2/en/os/i386/cvs-1.11.1p1-8.6.i386.rpm Red Hat Linux 7.0: SRPMS: ftp://updates.redhat.com/7.0/en/os/SRPMS/cvs-1.11.1p1-8.7.src.rpm i386: ftp://updates.redhat.com/7.0/en/os/i386/cvs-1.11.1p1-8.7.i386.rpm Red Hat Linux 7.1: SRPMS: ftp://updates.redhat.com/7.1/en/os/SRPMS/cvs-1.11.1p1-8.7.src.rpm i386: ftp://updates.redhat.com/7.1/en/os/i386/cvs-1.11.1p1-8.7.i386.rpm Red Hat Linux 7.2: SRPMS: ftp://updates.redhat.com/7.2/en/os/SRPMS/cvs-1.11.1p1-8.7.src.rpm i386: ftp://updates.redhat.com/7.2/en/os/i386/cvs-1.11.1p1-8.7.i386.rpm ia64: ftp://updates.redhat.com/7.2/en/os/ia64/cvs-1.11.1p1-8.7.ia64.rpm Red Hat Linux 7.3: SRPMS: ftp://updates.redhat.com/7.3/en/os/SRPMS/cvs-1.11.1p1-8.7.src.rpm i386: ftp://updates.redhat.com/7.3/en/os/i386/cvs-1.11.1p1-8.7.i386.rpm Red Hat Linux 8.0: SRPMS: ftp://updates.redhat.com/8.0/en/os/SRPMS/cvs-1.11.2-8.src.rpm i386: ftp://updates.redhat.com/8.0/en/os/i386/cvs-1.11.2-8.i386.rpm 6. Verification: MD5 sum Package Name - -------------------------------------------------------------------------- 2f93de016c503c5bb057280a5b3c21e3 6.2/en/os/SRPMS/cvs-1.11.1p1-8.6.src.rpm 0009017869564842d5ce5aa99fe71466 6.2/en/os/i386/cvs-1.11.1p1-8.6.i386.rpm 960b96371d348764c8a284ceeb439142 7.0/en/os/SRPMS/cvs-1.11.1p1-8.7.src.rpm 9b900d255ad7d445c79e612991c6dba6 7.0/en/os/i386/cvs-1.11.1p1-8.7.i386.rpm 960b96371d348764c8a284ceeb439142 7.1/en/os/SRPMS/cvs-1.11.1p1-8.7.src.rpm 9b900d255ad7d445c79e612991c6dba6 7.1/en/os/i386/cvs-1.11.1p1-8.7.i386.rpm 960b96371d348764c8a284ceeb439142 7.2/en/os/SRPMS/cvs-1.11.1p1-8.7.src.rpm 9b900d255ad7d445c79e612991c6dba6 7.2/en/os/i386/cvs-1.11.1p1-8.7.i386.rpm 6efda391465869fae84d670303f819ab 7.2/en/os/ia64/cvs-1.11.1p1-8.7.ia64.rpm 960b96371d348764c8a284ceeb439142 7.3/en/os/SRPMS/cvs-1.11.1p1-8.7.src.rpm 9b900d255ad7d445c79e612991c6dba6 7.3/en/os/i386/cvs-1.11.1p1-8.7.i386.rpm f1306501984e0a5736d52eb137fd144c 8.0/en/os/SRPMS/cvs-1.11.2-8.src.rpm 612a4814740dc8544619a22487b4652f 8.0/en/os/i386/cvs-1.11.2-8.i386.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 -v <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: md5sum <filename> 7. References: http://security.e-matters.de/advisories/012003.html http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0015 8. Contact: The Red Hat security contact is <security@redhat.com>. More contact details at http://www.redhat.com/solutions/security/news/contact.html Copyright 2003 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. 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Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 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 member emergencies only. -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBPi50cCh9+71yA2DNAQGI3wP/eydTpD3XZeIv0UKxovPmHJMkALVjpiX0 i/q+3eMwR+53jtzbTWcRLiN2C3C3krJbN/8jyUWVqoVI6UugGKzyFkN9MT0GIxct 5lD9kVVq84cD+BJ1m1eQK7lVxxrYKIOnyPuLIHjq9djkf6mBlIWyggN10wxjYmfc jC1v1OB6qsM= =Au2c -----END PGP SIGNATURE-----