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Test ID:
Category:Red Hat Local Security Checks
Title:RedHat Update for grep RHSA-2015:2111-07
Summary:The remote host is missing an update for the 'grep'; package(s) announced via the referenced advisory.
The remote host is missing an update for the 'grep'
package(s) announced via the referenced advisory.

Vulnerability Insight:
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.

Affected Software/OS:
grep on Red Hat Enterprise Linux Server (v. 7)

Please Install the Updated Packages.

CVSS Score:

CVSS Vector:

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2015-1345
BugTraq ID: 72281
RedHat Security Advisories: RHSA-2015:1447
SuSE Security Announcement: openSUSE-SU-2015:0243 (Google Search)
CopyrightCopyright (C) 2015 Greenbone Networks GmbH

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