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Red Hat Enterprise Linux 7: RHSA-2015:2111-07 Low: grep Buffer Overflow

Updated grep packages that fix one security issue and several bugs are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Low security impact. A Common Vulnerability Scoring System (CVSS) base score, which. -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ==================================================================== Red Hat Security Advisory Synopsis: Low: grep security and bug fix update Advisory ID: RHSA-2015:2111-07 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2015:2111.html Issue date: 2015-11-19 CVE Names: CVE-2015-1345 ==================================================================== 1. Summary: Updated grep packages that fix one security issue and several bugs are now available for Red Hat Enterprise Linux 7. Red Hat Product Security has rated this update as having Low 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. 2. Relevant releases/architectures: Red Hat Enterprise Linux Client (v. 7) - x86_64 Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64 Red Hat Enterprise Linux Server (v. 7) - aarch64, ppc64, ppc64le, s390x, x86_64 Red Hat Enterprise Linux Workstation (v. 7) - x86_64 3. Description: The grep utility searches through textual input for lines that contain a match to a specified pattern and then prints the matching lines. The GNU grep utilities include grep, egrep, and fgrep. A heap-based buffer overflow flaw was found in the way grep processed certain pattern and text combinations. An attacker able to trick a user into running grep on specially crafted input could use this flaw to crash grep or, potentially, read from uninitialized memory. (CVE-2015-1345) This update also fixes the following bugs: * Prior to this update, the w and W symbols were inconsistently matched to the [:alnum:] characterclass. Consequently, using regular expressions with "w" and "W" could lead to incorrect results. With this update, "w" is consistently matched to the [_[:alnum:]] character, and "W" is consistently matched to the [^_[:alnum:]] character. (BZ#1159012) * Previously, the Perl Compatible Regular Expression (PCRE) matcher (selected by the "-P" parameter in grep) did not work correctly when matching non-UTF-8 text in UTF-8 locales. Consequently, an error message about invalid UTF-8 byte sequence characters was returned. To fix this bug, patches from upstream have been applied to the grep utility. As a result, PCRE now skips non-UTF-8 characters as non-matching text without returning any error message. (BZ#1217080) All grep users are advised to upgrade to these updated packages, which contain backported patches to correct these issues. 4. Solution: Before applying this update, make sure all previously released errata relevant to your system have been applied. For details on how to apply this update, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1103259 - undocumented option --fixed-regexp 1159012 - inconsistent w and [[:alnum:]] behaviour 1183651 - CVE-2015-1345 grep: heap buffer overrun 6. Package List: Red Hat Enterprise Linux Client (v. 7): Source: grep-2.20-2.el7.src.rpm x86_64: grep-2.20-2.el7.x86_64.rpm grep-debuginfo-2.20-2.el7.x86_64.rpm Red Hat Enterprise Linux ComputeNode (v. 7): Source: grep-2.20-2.el7.src.rpm x86_64: grep-2.20-2.el7.x86_64.rpm grep-debuginfo-2.20-2.el7.x86_64.rpm Red Hat Enterprise Linux Server (v. 7): Source: grep-2.20-2.el7.src.rpm aarch64: grep-2.20-2.el7.aarch64.rpm grep-debuginfo-2.20-2.el7.aarch64.rpm ppc64: grep-2.20-2.el7.ppc64.rpm grep-debuginfo-2.20-2.el7.ppc64.rpm ppc64le: grep-2.20-2.el7.ppc64le.rpm grep-debuginfo-2.20-2.el7.ppc64le.rpm s390x: grep-2.20-2.el7.s390x.rpm grep-debuginfo-2.20-2.el7.s390x.rpm x86_64: grep-2.20-2.el7.x86_64.rpm grep-debuginfo-2.20-2.el7.x86_64.rpm Red Hat Enterprise LinuxWorkstation (v. 7): Source: grep-2.20-2.el7.src.rpm x86_64: grep-2.20-2.el7.x86_64.rpm grep-debuginfo-2.20-2.el7.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/ 7. References: https://access.redhat.com/security/cve/CVE-2015-1345 https://access.redhat.com/security/updates/classification/#low 8. Contact: The Red Hat security contact is . More contact details at https://access.redhat.com/security/team/contact/ Copyright 2015 Red Hat, Inc. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iD8DBQFWTj/oXlSAg2UNWIIRAmLoAKCzSmXX5ktdOLkFscvLrEzhCHDCOQCgwAba 21ij1MSsoc5FnUPC9/HCHJg=Luf+ -----END PGP SIGNATURE----- -- Enterprise-watch-list mailing list This email address is being protected from spambots. You need JavaScript enabled to view it. . The latest update for grep on Red Hat Enterprise Linux 7 addresses a minor severity buffer overflow issue along with various bug fixes.. Red Hat grep fix, security updates, bug fixes. . Severity: Low. LinuxSecurity.com Team

Nov 19, 2015 •Low Red Hat