Red Hat Security Advisory: glibc security and bug fix update Security Advisory secalert@redhat.com Red Hat Security Response Team RHSA-2012:1207 Final 1 1 2012-08-27T12:44:00Z Current version 2012-08-27T12:44:00Z 2012-08-27T12:44:00Z Red Hat rhsa-to-cvrf 1.0.1484 2012-08-27T13:10:02Z Updated glibc packages that fix multiple security issues and one bug are now available for Red Hat Enterprise Linux 5. The Red Hat Security Response Team has rated this update as having moderate security impact. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available from the CVE link in the References section. The glibc packages provide the standard C and standard math libraries used by multiple programs on the system. Without these libraries, the Linux system cannot function properly. Multiple integer overflow flaws, leading to stack-based buffer overflows, were found in glibc's functions for converting a string to a numeric representation (strtod(), strtof(), and strtold()). If an application used such a function on attacker controlled input, it could cause the application to crash or, potentially, execute arbitrary code. (CVE-2012-3480) This update also fixes the following bug: * Previously, logic errors in various mathematical functions, including exp, exp2, expf, exp2f, pow, sin, tan, and rint, caused inconsistent results when the functions were used with the non-default rounding mode. This could also cause applications to crash in some cases. With this update, the functions now give correct results across the four different rounding modes. (BZ#839411) All users of glibc are advised to upgrade to these updated packages, which contain backported patches to correct these issues. Please see https://www.redhat.com/footer/terms-of-use.html Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate https://rhn.redhat.com/errata/RHSA-2012-1207.html https://rhn.redhat.com/errata/RHSA-2012-1207.html https://access.redhat.com/security/updates/classification/#moderate https://access.redhat.com/security/updates/classification/#moderate Red Hat Enterprise Linux Desktop (v. 5 client) Red Hat Enterprise Linux (v. 5 server) glibc-2.5-81.el5_8.7.src.rpm glibc-2.5-81.el5_8.7 as a component of Red Hat Enterprise Linux Desktop (v. 5 client) glibc-2.5-81.el5_8.7 as a component of Red Hat Enterprise Linux (v. 5 server) Multiple integer overflow flaws, leading to stack-based buffer overflows, were found in glibc's functions for converting a string to a numeric representation (strtod(), strtof(), and strtold()). If an application used such a function on attacker controlled input, it could cause the application to crash or, potentially, execute arbitrary code. 2012-08-13T00:00:00Z 2012-08-12T00:00:00Z CVE-2012-3480 5Client-5.8.Z:glibc-2.5-81.el5_8.7 5Server-5.8.Z:glibc-2.5-81.el5_8.7 Moderate 4.4 AV:L/AC:M/Au:N/C:P/I:P/A:P 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 https://rhn.redhat.com/errata/RHSA-2012-1207.html https://www.redhat.com/security/data/cve/CVE-2012-3480.html CVE-2012-3480 https://bugzilla.redhat.com/show_bug.cgi?id=847715 bz#847715: CVE-2012-3480 glibc: Integer overflows, leading to stack-based buffer overflows in strto* related routines