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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2015.2870 Low: grep security and bug fix update 20 November 2015 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: grep Publisher: Red Hat Operating System: Red Hat Enterprise Linux Server 7 Red Hat Enterprise Linux WS/Desktop 7 Impact/Access: Access Privileged Data -- Remote with User Interaction Denial of Service -- Remote with User Interaction Resolution: Patch/Upgrade CVE Names: CVE-2015-1345 Reference: ESB-2015.1924 Original Bulletin: https://rhn.redhat.com/errata/RHSA-2015-2111.html - --------------------------BEGIN INCLUDED TEXT-------------------- - -----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://rhn.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:] character class. 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 Linux Workstation (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 <secalert@redhat.com>. 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----- - --------------------------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. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 =========================================================================== 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). 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