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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2004.0322 -- RHSA-2004:181-01 Updated libpng packages fix crash 04 May 2004 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: libpng Publisher: Red Hat Operating System: Red Hat Linux 9 Linux Impact: Denial of Service Access Required: Remote CVE Names: CAN-2004-0421 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - --------------------------------------------------------------------- Red Hat Security Advisory Synopsis: Updated libpng packages fix crash Advisory ID: RHSA-2004:181-01 Issue date: 2004-04-30 Updated on: 2004-04-30 Product: Red Hat Linux Keywords: Cross references: Obsoletes: CVE Names: CAN-2004-0421 - - --------------------------------------------------------------------- 1. Topic: Updated libpng packages that fix a out of bounds memory access are now available. 2. Relevant releases/architectures: Red Hat Linux 9 - i386 3. Problem description: The libpng package contains a library of functions for creating and manipulating PNG (Portable Network Graphics) image format files. Steve Grubb discovered a out of bounds memory access flaw in libpng. An attacker could carefully craft a PNG file in such a way that it would cause an application linked to libpng to crash when opened by a victim. This issue may not be used to execute arbitrary code. Users are advised to upgrade to these updated packages that contain a backported security fix 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/libpng-1.2.2-20.src.rpm ftp://updates.redhat.com/9/en/os/SRPMS/libpng10-1.0.13-11.src.rpm i386: ftp://updates.redhat.com/9/en/os/i386/libpng-1.2.2-20.i386.rpm ftp://updates.redhat.com/9/en/os/i386/libpng-devel-1.2.2-20.i386.rpm ftp://updates.redhat.com/9/en/os/i386/libpng10-1.0.13-11.i386.rpm ftp://updates.redhat.com/9/en/os/i386/libpng10-devel-1.0.13-11.i386.rpm 6. Verification: MD5 sum Package Name - - -------------------------------------------------------------------------- e45674dfbfc641bae05438da90bc5cb8 9/en/os/SRPMS/libpng-1.2.2-20.src.rpm 591b1c8a152e1dcac63b82640ffa14e0 9/en/os/SRPMS/libpng10-1.0.13-11.src.rpm 3f1c2ee426702c64e73ee453afb6216f 9/en/os/i386/libpng-1.2.2-20.i386.rpm a08847d084032f99a1b33d3b5a9fba33 9/en/os/i386/libpng-devel-1.2.2-20.i386.rpm 800356c0126f967b9353279ebc8c321c 9/en/os/i386/libpng10-1.0.13-11.i386.rpm 505508162b208c95b5bd3e63e9cafbfd 9/en/os/i386/libpng10-devel-1.0.13-11.i386.rpm These packages are GPG signed by Red Hat for security. Our key is available from https://www.redhat.com/security/team/key.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://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0421 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://www.redhat.com/security/team/contact.html Copyright 2004 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iD8DBQFAkqnDXlSAg2UNWIIRAvPYAJ9hEsTzGCtZCcOJRhlL/HpccV84SwCgrtgn Zo1Ls97ybCzXx/DxVr0HDfI= =8k18 - -----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. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. 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 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 iQCVAwUBQJcfuyh9+71yA2DNAQK8uwP/epZbTkzBmWTRiswqT5GkEvdhlF5l9Ll9 ywlSYse7esZvUb9NLxpA9V/YnpZ3gmtosCOREt5YnU5Hlm3+frKbctXQtFmJp04G DiyWopEzLy532hLMLqrlAoD4o6PJQzqGaCtQm9/uzaTW/Xyi5zMM3gt6fweXUs9n SH8sHcPYE3U= =d7QO -----END PGP SIGNATURE-----