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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2003.0839 -- RHSA-2003:398-01 New rsync packages fix remote security vulnerability 05 December 2003 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: rsync 2.5.6 and earlier Publisher: Red Hat Operating System: Red Hat Linux 9 Red Hat Linux 8.0 Red Hat Linux 7.3 Red Hat Linux 7.2 Red Hat Linux 7.1 Linux Platform: IA-32 IA-64 Impact: Execute Arbitrary Code/Commands Access Required: Remote CVE Names: CAN-2003-0962 Ref: AL-2003.24 ESB-2003.0837 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - --------------------------------------------------------------------- Red Hat Security Advisory Synopsis: New rsync packages fix remote security vulnerability Advisory ID: RHSA-2003:398-01 Issue date: 2003-12-04 Updated on: 2003-12-04 Product: Red Hat Linux Keywords: rsync heap overflow Cross references: Obsoletes: CVE Names: CAN-2003-0962 - - --------------------------------------------------------------------- 1. Topic: Updated rsync packages are now available that fix a heap overflow in the Rsync server. 2. Relevant releases/architectures: 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 Red Hat Linux 9 - i386 3. Problem description: rsync is a program for sychronizing files over the network. A heap overflow bug exists in rsync versions prior to 2.5.7. On machines where the rsync server has been enabled, a remote attacker could use this flaw to execute arbitrary code as an unprivileged user. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2003-0962 to this issue. All users should upgrade to these erratum packages containing version 2.5.7 of rsync, which is not vulnerable to this issue. NOTE: The rsync server is disabled (off) by default in Red Hat Linux. To check if the rsync server has been enabled (on), run the following command: /sbin/chkconfig --list rsync If the rsync server has been enabled but is not required, it can be disabled by running the following command as root: /sbin/chkconfig rsync off Red Hat would like to thank the rsync team for their rapid response and quick fix for this issue. 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. If up2date fails to connect to Red Hat Network due to SSL Certificate Errors, you need to install a version of the up2date client with an updated certificate. The latest version of up2date is available from the Red Hat FTP site and may also be downloaded directly from the RHN website: https://rhn.redhat.com/help/latest-up2date.px 5. RPMs required: Red Hat Linux 7.1: SRPMS: ftp://updates.redhat.com/7.1/en/os/SRPMS/rsync-2.5.7-0.7.src.rpm i386: ftp://updates.redhat.com/7.1/en/os/i386/rsync-2.5.7-0.7.i386.rpm Red Hat Linux 7.2: SRPMS: ftp://updates.redhat.com/7.2/en/os/SRPMS/rsync-2.5.7-0.7.src.rpm i386: ftp://updates.redhat.com/7.2/en/os/i386/rsync-2.5.7-0.7.i386.rpm ia64: ftp://updates.redhat.com/7.2/en/os/ia64/rsync-2.5.7-0.7.ia64.rpm Red Hat Linux 7.3: SRPMS: ftp://updates.redhat.com/7.3/en/os/SRPMS/rsync-2.5.7-0.7.src.rpm i386: ftp://updates.redhat.com/7.3/en/os/i386/rsync-2.5.7-0.7.i386.rpm Red Hat Linux 8.0: SRPMS: ftp://updates.redhat.com/8.0/en/os/SRPMS/rsync-2.5.7-0.8.src.rpm i386: ftp://updates.redhat.com/8.0/en/os/i386/rsync-2.5.7-0.8.i386.rpm Red Hat Linux 9: SRPMS: ftp://updates.redhat.com/9/en/os/SRPMS/rsync-2.5.7-0.9.src.rpm i386: ftp://updates.redhat.com/9/en/os/i386/rsync-2.5.7-0.9.i386.rpm 6. Verification: MD5 sum Package Name - - -------------------------------------------------------------------------- e1981db86eac2625edbd24cd41120810 7.1/en/os/SRPMS/rsync-2.5.7-0.7.src.rpm 19c87db1c5794f30e60ee5927d959e87 7.1/en/os/i386/rsync-2.5.7-0.7.i386.rpm e1981db86eac2625edbd24cd41120810 7.2/en/os/SRPMS/rsync-2.5.7-0.7.src.rpm 19c87db1c5794f30e60ee5927d959e87 7.2/en/os/i386/rsync-2.5.7-0.7.i386.rpm 0cc8dbd351e0e5369eb6de006d20271c 7.2/en/os/ia64/rsync-2.5.7-0.7.ia64.rpm e1981db86eac2625edbd24cd41120810 7.3/en/os/SRPMS/rsync-2.5.7-0.7.src.rpm 19c87db1c5794f30e60ee5927d959e87 7.3/en/os/i386/rsync-2.5.7-0.7.i386.rpm a2f512f5b2859f811a0380a6390c4337 8.0/en/os/SRPMS/rsync-2.5.7-0.8.src.rpm cbcb9807c753ada532ee56930b82a17f 8.0/en/os/i386/rsync-2.5.7-0.8.i386.rpm fe8e0bb67b3870b9773ced0e61b70621 9/en/os/SRPMS/rsync-2.5.7-0.9.src.rpm cc8b37db1518aa08b20b0ede31146a2e 9/en/os/i386/rsync-2.5.7-0.9.i386.rpm These packages are GPG signed by Red Hat for security. Our key is available from https://www.redhat.com/security/keys.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://rsync.samba.org/ http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0962 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://www.redhat.com/solutions/security/news/contact.html Copyright 2003 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iD8DBQE/z6OvXlSAg2UNWIIRAtxqAJ4/0mli20PTBxZeMKAO1GPft01OhwCfRuDV QZcDoPi54bZFCoTw2mr8ASw= =8CUG - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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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 author's website 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/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 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----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBP9AXmSh9+71yA2DNAQFKPQP9FlJoUn6vA7k/PAhOrmNqijhBzdC6WtDF O8oBCePHuJHaPP18MAGDGegj+1ZTnTUeo/5QvhxS0Wd0gnWuxn5s9u2D7bsWRdqL PeFqdt8G4YzGIUzHV/sNaEa05edFl4Wt0uS8o01wLMArtw9qKGk5MhO48CQIFX71 9b193xRTyCA= =8j5k -----END PGP SIGNATURE-----