Scientific Linux SL6.x: 2013-02-21 Moderate: pcsc-lite Buffer Overflow

Date: Thu, 28 Feb 2013 16:17:24 -0600
Reply-To: Pat Riehecky 
Sender: Security Errata for Scientific Linux
 
From: Pat Riehecky 
Organization: Fermilab
Subject: Security ERRATA Moderate: pcsc-lite on SL6.x i386/x86_64
MIME-Version: 1.0

Synopsis: Moderate: pcsc-lite security and bug fix update
Issue Date: 2013-02-21
CVE Numbers: CVE-2010-4531
--

A stack-based buffer overflow flaw was found in the way pcsc-lite decoded
certain attribute values of Answer-to-Reset (ATR) messages. A local attacker
could use this flaw to execute arbitrary code with the privileges of the
user running the pcscd daemon (root, by default), by inserting a
specially-crafted smart card. (CVE-2010-4531)

This update also fixes the following bugs:

* Due to an error in the init script, the chkconfig utility did not
automatically place the pcscd init script after the start of the HAL daemon.
Consequently, the pcscd service did not start automatically at boot
time. With this update, the pcscd init script has been changed to explicitly start only
after HAL is up, thus fixing this bug.

* Because the chkconfig settings and the startup files in the /etc/rc.d/
directory were not changed during the update described in the SLBA-2012:0990
advisory, the user had to update the chkconfig settings manually to fix the
problem. Now, the chkconfig settings and the startup files in the /etc/rc.d/
directory are automatically updated as expected.

* Previously, the SCardGetAttrib() function did not work properly and always
returned the "SCARD_E_INSUFFICIENT_BUFFER" error regardless of the actual
buffer size. This update applies a patch to fix this bug and the
SCardGetAttrib() function now works as expected.

After installing this update, the pcscd daemon will be restarted
automatically.
--

SL6
 x86_64
 pcsc-lite-1.5.2-11.el6.x86_64.rpm
 pcsc-lite-debuginfo-1.5.2-11.el6.i686.rpm
 pcsc-lite-debuginfo-1.5.2-11.el6.x86_64.rpm
 pcsc-lite-libs-1.5.2-11.el6.i686.rpm
 pcsc-lite-libs-1.5.2-11.el6.x86_64.rpm
 pcsc-lite-devel-1.5.2-11.el6.i686.rpm
 pcsc-lite-devel-1.5.2-11.el6.x86_64.rpm
 pcsc-lite-doc-1.5.2-11.el6.x86_64.rpm
 i386
 pcsc-lite-1.5.2-11.el6.i686.rpm
 pcsc-lite-debuginfo-1.5.2-11.el6.i686.rpm
 pcsc-lite-libs-1.5.2-11.el6.i686.rpm
 pcsc-lite-devel-1.5.2-11.el6.i686.rpm
 pcsc-lite-doc-1.5.2-11.el6.i686.rpm

- Scientific Linux Development Team