Scientific Linux: 2014-2023-1 Moderate: glibc Command Injection Exploit

Date: Fri, 19 Dec 2014 15:00:02 +0000
Reply-To: scientific-linux-users@
Sender: Security Errata for Scientific Linux
 
From: Pat Riehecky 
Subject: Security ERRATA Moderate: glibc on SL7.x x86_64
MIME-Version: 1.0

Synopsis: Moderate: glibc security and bug fix update
Advisory ID: SLSA-2014:2023-1
Issue Date: 2014-12-18
CVE Numbers: CVE-2014-7817
--

It was found that the wordexp() function would perform command
substitution even when the WRDE_NOCMD flag was specified. An attacker able
to provide specially crafted input to an application using the wordexp()
function, and not sanitizing the input correctly, could potentially use
this flaw to execute arbitrary commands with the credentials of the user
running that application. (CVE-2014-7817)

This update also fixes the following bug:

* Prior to this update, if a file stream that was opened in append mode
and its underlying file descriptor were used at the same time and the file
was truncated using the ftruncate() function on the file descriptor, a
subsequent ftell() call on the stream incorrectly modified the file offset
by seeking to the new end of the file. This update ensures that ftell()
modifies the state of the file stream only when it is in append mode and
its buffer is not empty. As a result, the described incorrect changes to
the file offset no longer occur.
--

SL7
 x86_64
 glibc-2.17-55.el7_0.3.i686.rpm
 glibc-2.17-55.el7_0.3.x86_64.rpm
 glibc-common-2.17-55.el7_0.3.x86_64.rpm
 glibc-debuginfo-2.17-55.el7_0.3.i686.rpm
 glibc-debuginfo-2.17-55.el7_0.3.x86_64.rpm
 glibc-debuginfo-common-2.17-55.el7_0.3.i686.rpm
 glibc-debuginfo-common-2.17-55.el7_0.3.x86_64.rpm
 glibc-devel-2.17-55.el7_0.3.i686.rpm
 glibc-devel-2.17-55.el7_0.3.x86_64.rpm
 glibc-headers-2.17-55.el7_0.3.x86_64.rpm
 glibc-utils-2.17-55.el7_0.3.x86_64.rpm
 nscd-2.17-55.el7_0.3.x86_64.rpm
 glibc-static-2.17-55.el7_0.3.i686.rpm
 glibc-static-2.17-55.el7_0.3.x86_64.rpm

- Scientific Linux Development Team