-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Critical: thunderbird security update Advisory ID: RHSA-2011:1342-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2011-1342.html Issue date: 2011-09-28 CVE Names: CVE-2011-2372 CVE-2011-2995 CVE-2011-2998 CVE-2011-2999 CVE-2011-3000 ===================================================================== 1. Summary: An updated thunderbird package that fixes several security issues is now available for Red Hat Enterprise Linux 6. The Red Hat Security Response Team has rated this update as having critical security impact. Common Vulnerability Scoring System (CVSS) base scores, which give detailed severity ratings, are available for each vulnerability from the CVE links in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux Desktop (v. 6) - i386, x86_64 Red Hat Enterprise Linux Server Optional (v. 6) - i386, ppc64, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 6) - i386, x86_64 3. Description: Mozilla Thunderbird is a standalone mail and newsgroup client. Several flaws were found in the processing of malformed HTML content. An HTML mail message containing malicious content could cause Thunderbird to crash or, potentially, execute arbitrary code with the privileges of the user running Thunderbird. (CVE-2011-2995) A flaw was found in the way Thunderbird processed the "Enter" keypress event. A malicious HTML mail message could present a download dialog while the key is pressed, activating the default "Open" action. A remote attacker could exploit this vulnerability by causing the mail client to open malicious web content. (CVE-2011-2372) A flaw was found in the way Thunderbird handled Location headers in redirect responses. Two copies of this header with different values could be a symptom of a CRLF injection attack against a vulnerable server. Thunderbird now treats two copies of the Location, Content-Length, or Content-Disposition header as an error condition. (CVE-2011-3000) A flaw was found in the way Thunderbird handled frame objects with certain names. An attacker could use this flaw to cause a plug-in to grant its content access to another site or the local file system, violating the same-origin policy. (CVE-2011-2999) An integer underflow flaw was found in the way Thunderbird handled large JavaScript regular expressions. An HTML mail message containing malicious JavaScript could cause Thunderbird to access already freed memory, causing Thunderbird to crash or, potentially, execute arbitrary code with the privileges of the user running Thunderbird. (CVE-2011-2998) All Thunderbird users should upgrade to this updated package, which resolves these issues. All running instances of Thunderbird must be restarted for the update to take effect. 4. Solution: Before applying this update, make sure all previously-released errata relevant to your system have been applied. This update is available via the Red Hat Network. Details on how to use the Red Hat Network to apply this update are available at https://access.redhat.com/kb/docs/DOC-11259 5. Bugs fixed (http://bugzilla.redhat.com/): 741902 - CVE-2011-2995 Mozilla: Miscellaneous memory safety hazards (MFSA 2011-36) 741904 - CVE-2011-2999 Mozilla: XSS via plugins and shadowed window.location object (MFSA 2011-38) 741905 - CVE-2011-3000 Mozilla:Defense against multiple Location headers due to CRLF Injection (MFSA 2011-39) 741917 - CVE-2011-2372 Mozilla:Code installation through holding down Enter (MFSA 2011-40) 741924 - CVE-2011-2998 Mozilla: Integer underflow when using JavaScript RegExp (MFSA 2011-37) 6. Package List: Red Hat Enterprise Linux Desktop (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Client/en/os/SRPMS/thunderbird-3.1.15-1.el6_1.src.rpm i386: thunderbird-3.1.15-1.el6_1.i686.rpm thunderbird-debuginfo-3.1.15-1.el6_1.i686.rpm x86_64: thunderbird-3.1.15-1.el6_1.x86_64.rpm thunderbird-debuginfo-3.1.15-1.el6_1.x86_64.rpm Red Hat Enterprise Linux Server Optional (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/thunderbird-3.1.15-1.el6_1.src.rpm i386: thunderbird-3.1.15-1.el6_1.i686.rpm thunderbird-debuginfo-3.1.15-1.el6_1.i686.rpm ppc64: thunderbird-3.1.15-1.el6_1.ppc64.rpm thunderbird-debuginfo-3.1.15-1.el6_1.ppc64.rpm s390x: thunderbird-3.1.15-1.el6_1.s390x.rpm thunderbird-debuginfo-3.1.15-1.el6_1.s390x.rpm x86_64: thunderbird-3.1.15-1.el6_1.x86_64.rpm thunderbird-debuginfo-3.1.15-1.el6_1.x86_64.rpm Red Hat Enterprise Linux Workstation (v. 6): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/6Workstation/en/os/SRPMS/thunderbird-3.1.15-1.el6_1.src.rpm i386: thunderbird-3.1.15-1.el6_1.i686.rpm thunderbird-debuginfo-3.1.15-1.el6_1.i686.rpm x86_64: thunderbird-3.1.15-1.el6_1.x86_64.rpm thunderbird-debuginfo-3.1.15-1.el6_1.x86_64.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://access.redhat.com/security/team/key/#package 7. References: https://www.redhat.com/security/data/cve/CVE-2011-2372.html https://www.redhat.com/security/data/cve/CVE-2011-2995.html https://www.redhat.com/security/data/cve/CVE-2011-2998.html https://www.redhat.com/security/data/cve/CVE-2011-2999.html https://www.redhat.com/security/data/cve/CVE-2011-3000.html https://access.redhat.com/security/updates/classification/#critical 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2011 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFOg7SRXlSAg2UNWIIRAvXNAJ9A5WTk9dnUM9pjIPqVEGNIztvAJgCfaNNf ziYA0fTwhL8zzAykZqwxpeo= =OK/t -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce