-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ===================================================================== Red Hat Security Advisory Synopsis: Important: gnutls security update Advisory ID: RHSA-2012:0428-01 Product: Red Hat Enterprise Linux Advisory URL: https://rhn.redhat.com/errata/RHSA-2012-0428.html Issue date: 2012-03-27 CVE Names: CVE-2011-4128 CVE-2012-1569 CVE-2012-1573 ===================================================================== 1. Summary: Updated gnutls packages that fix three security issues are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having important 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: RHEL Desktop Workstation (v. 5 client) - i386, x86_64 Red Hat Enterprise Linux (v. 5 server) - i386, ia64, ppc, s390x, x86_64 Red Hat Enterprise Linux Desktop (v. 5 client) - i386, x86_64 3. Description: The GnuTLS library provides support for cryptographic algorithms and for protocols such as Transport Layer Security (TLS). GnuTLS includes libtasn1, a library developed for ASN.1 (Abstract Syntax Notation One) structures management that includes DER (Distinguished Encoding Rules) encoding and decoding. A flaw was found in the way GnuTLS decrypted malformed TLS records. This could cause a TLS/SSL client or server to crash when processing a specially-crafted TLS record from a remote TLS/SSL connection peer. (CVE-2012-1573) A flaw was found in the way libtasn1 decoded DER data. An attacker could create a carefully-crafted X.509 certificate that, when parsed by an application that uses GnuTLS, could cause the application to crash. (CVE-2012-1569) A boundary error was found in the gnutls_session_get_data() function. A malicious TLS/SSL server could use this flaw to crash a TLS/SSL client or, possibly, execute arbitrary code as the client, if the client passed a fixed-sized buffer to gnutls_session_get_data() before checking the real size of the session data provided by the server. (CVE-2011-4128) Red Hat would like to thank Matthew Hall of Mu Dynamics for reporting CVE-2012-1573 and CVE-2012-1569. Users of GnuTLS are advised to upgrade to these updated packages, which contain backported patches to correct these issues. For the update to take effect, all applications linked to the GnuTLS library must be restarted, or the system rebooted. 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/knowledge/articles/11258 5. Bugs fixed (http://bugzilla.redhat.com/): 752308 - CVE-2011-4128 gnutls: buffer overflow in gnutls_session_get_data() (GNUTLS-SA-2011-2) 804920 - CVE-2012-1569 libtasn1: DER decoding buffer overflow (GNUTLS-SA-2012-3, MU-201202-02) 805432 - CVE-2012-1573 gnutls: TLS record handling issue (GNUTLS-SA-2012-2, MU-201202-01) 6. Package List: Red Hat Enterprise Linux Desktop (v. 5 client): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/gnutls-1.4.1-7.el5_8.2.src.rpm i386: gnutls-1.4.1-7.el5_8.2.i386.rpm gnutls-debuginfo-1.4.1-7.el5_8.2.i386.rpm gnutls-utils-1.4.1-7.el5_8.2.i386.rpm x86_64: gnutls-1.4.1-7.el5_8.2.i386.rpm gnutls-1.4.1-7.el5_8.2.x86_64.rpm gnutls-debuginfo-1.4.1-7.el5_8.2.i386.rpm gnutls-debuginfo-1.4.1-7.el5_8.2.x86_64.rpm gnutls-utils-1.4.1-7.el5_8.2.x86_64.rpm RHEL Desktop Workstation (v. 5 client): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Client/en/os/SRPMS/gnutls-1.4.1-7.el5_8.2.src.rpm i386: gnutls-debuginfo-1.4.1-7.el5_8.2.i386.rpm gnutls-devel-1.4.1-7.el5_8.2.i386.rpm x86_64: gnutls-debuginfo-1.4.1-7.el5_8.2.i386.rpm gnutls-debuginfo-1.4.1-7.el5_8.2.x86_64.rpm gnutls-devel-1.4.1-7.el5_8.2.i386.rpm gnutls-devel-1.4.1-7.el5_8.2.x86_64.rpm Red Hat Enterprise Linux (v. 5 server): Source: ftp://ftp.redhat.com/pub/redhat/linux/enterprise/5Server/en/os/SRPMS/gnutls-1.4.1-7.el5_8.2.src.rpm i386: gnutls-1.4.1-7.el5_8.2.i386.rpm gnutls-debuginfo-1.4.1-7.el5_8.2.i386.rpm gnutls-devel-1.4.1-7.el5_8.2.i386.rpm gnutls-utils-1.4.1-7.el5_8.2.i386.rpm ia64: gnutls-1.4.1-7.el5_8.2.i386.rpm gnutls-1.4.1-7.el5_8.2.ia64.rpm gnutls-debuginfo-1.4.1-7.el5_8.2.i386.rpm gnutls-debuginfo-1.4.1-7.el5_8.2.ia64.rpm gnutls-devel-1.4.1-7.el5_8.2.ia64.rpm gnutls-utils-1.4.1-7.el5_8.2.ia64.rpm ppc: gnutls-1.4.1-7.el5_8.2.ppc.rpm gnutls-1.4.1-7.el5_8.2.ppc64.rpm gnutls-debuginfo-1.4.1-7.el5_8.2.ppc.rpm gnutls-debuginfo-1.4.1-7.el5_8.2.ppc64.rpm gnutls-devel-1.4.1-7.el5_8.2.ppc.rpm gnutls-devel-1.4.1-7.el5_8.2.ppc64.rpm gnutls-utils-1.4.1-7.el5_8.2.ppc.rpm s390x: gnutls-1.4.1-7.el5_8.2.s390.rpm gnutls-1.4.1-7.el5_8.2.s390x.rpm gnutls-debuginfo-1.4.1-7.el5_8.2.s390.rpm gnutls-debuginfo-1.4.1-7.el5_8.2.s390x.rpm gnutls-devel-1.4.1-7.el5_8.2.s390.rpm gnutls-devel-1.4.1-7.el5_8.2.s390x.rpm gnutls-utils-1.4.1-7.el5_8.2.s390x.rpm x86_64: gnutls-1.4.1-7.el5_8.2.i386.rpm gnutls-1.4.1-7.el5_8.2.x86_64.rpm gnutls-debuginfo-1.4.1-7.el5_8.2.i386.rpm gnutls-debuginfo-1.4.1-7.el5_8.2.x86_64.rpm gnutls-devel-1.4.1-7.el5_8.2.i386.rpm gnutls-devel-1.4.1-7.el5_8.2.x86_64.rpm gnutls-utils-1.4.1-7.el5_8.2.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-2011-4128.html https://www.redhat.com/security/data/cve/CVE-2012-1569.html https://www.redhat.com/security/data/cve/CVE-2012-1573.html https://access.redhat.com/security/updates/classification/#important 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2012 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.4 (GNU/Linux) iD8DBQFPckgHXlSAg2UNWIIRAp9/AKCNAvxeYkqSIZsRjH7H0oymhSCOhQCfZyQF tmK7vHPL9UA4mOTEYlCkoVg= =vUmN -----END PGP SIGNATURE----- -- RHSA-announce mailing list RHSA-announce@redhat.com https://www.redhat.com/mailman/listinfo/rhsa-announce