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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2008.0811 -- [RedHat] Moderate: yum-rhn-plugin security update 15 August 2008 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: yum-rhn-plugin Publisher: Red Hat Operating System: Red Hat Linux 5 Impact: Denial of Service Access: Remote/Unauthenticated CVE Names: CVE-2008-3270 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2008-0815.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Moderate: yum-rhn-plugin security update Advisory ID: RHSA-2008:0815-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2008-0815.html Issue date: 2008-08-14 CVE Names: CVE-2008-3270 ===================================================================== 1. Summary: Updated yum-rhn-plugin packages that fix a security issue are now available for Red Hat Enterprise Linux 5. This update has been rated as having moderate security impact by the Red Hat Security Response Team. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 5 client) - noarch Red Hat Enterprise Linux (v. 5 server) - noarch 3. Description: The yum-rhn-plugin provides support for yum to securely access a Red Hat Network (RHN) server for software updates. It was discovered that yum-rhn-plugin did not verify the SSL certificate for all communication with a Red Hat Network server. An attacker able to redirect the network communication between a victim and an RHN server could use this flaw to provide malicious repository metadata. This metadata could be used to block the victim from receiving specific security updates. (CVE-2008-3270) This flaw did not allow an attacker to install malicious packages. Package signatures were verified and only packages signed with a trusted Red Hat GPG key were installed. Red Hat would like to thank Justin Samuel for discussing various package update mechanism flaws which led to our discovery of this issue. Users of yum-rhn-plugin are advised to upgrade to this updated packages, which resolves this issue. 4. Solution: Before applying this update, make sure that all previously-released errata relevant to your system have been applied. This update is available via Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at http://kbase.redhat.com/faq/FAQ_58_10188 5. Bugs fixed (http://bugzilla.redhat.com/): 457113 - CVE-2008-3270 yum-rhn-plugin: does not verify SSL certificate for all communication with RHN server 6. Package List: Red Hat Enterprise Linux Desktop (v. 5 client): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/yum-rhn-plugin-0.5.3-12.el5_2.9.src.rpm noarch: yum-rhn-plugin-0.5.3-12.el5_2.9.noarch.rpm Red Hat Enterprise Linux (v. 5 server): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/yum-rhn-plugin-0.5.3-12.el5_2.9.src.rpm noarch: yum-rhn-plugin-0.5.3-12.el5_2.9.noarch.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://www.redhat.com/security/team/key/#package 7. References: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2008-3270 http://www.redhat.com/security/updates/classification/#moderate 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://www.redhat.com/security/team/contact/ Copyright 2008 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFIpC+/XlSAg2UNWIIRAoUYAKCGobj2QZPsan8y923FKa6Xj09s6QCguzg5 r9vMKJPOIeTB54ICxsJwrIM= =dy9t - -----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. NOTE: Third Party Rights 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 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 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 iQCVAwUBSKTh3ih9+71yA2DNAQKbfQP+LhqV7FvLo5TxP/si32z1SBJ+BcDj4gCH 0lejonWVZ9B0G9VAPms8CkY6l0bCodfxX33OHwpCazx/EAHK+soRn4MVSnKUwNqE jY+fEWOHJXoPgm5sXq1/wKnW6wf3da5EEL2S0qgaPomGUQtN1D+XM//3TOsAEvuB ZnWVLK2vvbU= =YSPm -----END PGP SIGNATURE-----