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-----BEGIN PGP SIGNED MESSAGE----- =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2004.0178 -- RHSA-2004:091-02 Updated libxml2 packages fix security vulnerability 04 March 2004 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: libxml2 Publisher: Red Hat Operating System: Red Hat Linux 9 Linux Impact: Execute Arbitrary Code/Commands Access Required: Remote CVE Names: CAN-2004-0110 Ref: ESB-2004.0166 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - --------------------------------------------------------------------- Red Hat Security Advisory Synopsis: Updated libxml2 packages fix security vulnerability Advisory ID: RHSA-2004:091-02 Issue date: 2004-03-03 Updated on: 2004-03-03 Product: Red Hat Linux Keywords: Cross references: Obsoletes: CVE Names: CAN-2004-0110 - - --------------------------------------------------------------------- 1. Topic: Updated libxml2 packages that fix an overflow when parsing remote resources are now available. [Updated 3 March 2004] Revised libxml2 packages are now available as the original packages did not contain a complete patch. 2. Relevant releases/architectures: Red Hat Linux 9 - i386 3. Problem description: libxml2 is a library for manipulating XML files. Yuuichi Teranishi discovered a flaw in libxml2 versions prior to 2.6.6. When fetching a remote resource via FTP or HTTP, libxml2 uses special parsing routines. These routines can overflow a buffer if passed a very long URL. If an attacker is able to find an application using libxml2 that parses remote resources and allows them to influence the URL, then this flaw could be used to execute arbitrary code. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CAN-2004-0110 to this issue. All users are advised to upgrade to these updated packages, which contain a backported fix and are not vulnerable to 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.pxt 5. RPMs required: Red Hat Linux 9: SRPMS: ftp://updates.redhat.com/9/en/os/SRPMS/libxml2-2.5.4-3.rh9.src.rpm i386: ftp://updates.redhat.com/9/en/os/i386/libxml2-2.5.4-3.rh9.i386.rpm ftp://updates.redhat.com/9/en/os/i386/libxml2-devel-2.5.4-3.rh9.i386.rpm ftp://updates.redhat.com/9/en/os/i386/libxml2-python-2.5.4-3.rh9.i386.rpm 6. Verification: MD5 sum Package Name - - -------------------------------------------------------------------------- cb550a537cbc60b95dcc4396ab419466 9/en/os/SRPMS/libxml2-2.5.4-3.rh9.src.rpm b063360d9efb8f4de082f1324fdcd421 9/en/os/i386/libxml2-2.5.4-3.rh9.i386.rpm 8590c8fcd8268d3b682531a4428f14f8 9/en/os/i386/libxml2-devel-2.5.4-3.rh9.i386.rpm d34886934ad6c00607e0117815bc1e0a 9/en/os/i386/libxml2-python-2.5.4-3.rh9.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://mail.gnome.org/archives/xml/2004-February/msg00070.html http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0110 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) iD8DBQFARdnpXlSAg2UNWIIRAtbLAJwKtHXbxKmYMXH+ijc1U1tdDyh4OQCglW2U cVDJ2zxOZzZgjfNOV0z3fIU= =zsb2 - -----END PGP SIGNATURE----- - --------------------------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. 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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 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 iQCVAwUBQEZ+9yh9+71yA2DNAQGW3wP/TTSNkmsVvCLeoIv/PPZ4CYN+T8S5pNFG IuI9w3MnWQDUI22NuVDEs5QwiRT5S7nIgHZIxgbtBL3uMdDBCYm9N/ODhdLLwAwX lAT8/PH63z0nYSTdgzopjEBCTQGPslPhfOtL49CzN20asFDHXipc1Ei4O+FYncmc PrVhxFuSPpw= =S7NM -----END PGP SIGNATURE-----