This script is Copyright (C) 2015 Tenable Network Security, Inc.
The remote Scientific Linux host is missing one or more security
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.
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
- 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
See also :
Update the affected grep and / or grep-debuginfo packages.
Risk factor :
Low / CVSS Base Score : 2.1