U radu programskog paketa Shadow otkriven je i ispravljen sigurnosni nedostatak. Riječ je o skupu alata koji se koriste za rad s korisničkim računima grupa i pojedinaca. Spomenuti nedostatak je posljedica višestrukih CRLF ranjivosti u naredbama "chfn" i "chsh". Lokalnom napadaču takva situacija omogućuje dodavanje novih korisnika i grupa u "/etc/passwd" putem GECOS polja. Kako bi zaštitili svoja računala od potencijalnih napada, svim se korisnicima savjetuje prelazak na ispravljene inačice paketa.

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

[slackware-security]  shadow (SSA:2011-086-03)

New shadow packages are available for Slackware 13.1 and -current to
fix a security issue.


Here are the details from the Slackware 13.1 ChangeLog:
+--------------------------+
patches/packages/shadow-4.1.4.3-i486-1_slack13.1.txz:  Rebuilt.
  This release fixes a security issue where local users may be able to add
  themselves to NIS groups through chfn and chsh.
  For more information, see:
    http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2011-0721
  (* Security fix *)
  Thanks to Gary Langshaw for collecting important additional patches from
svn.
+--------------------------+


Where to find the new packages:
+-----------------------------+

HINT:  Getting slow download speeds from ftp.slackware.com?
Give slackware.osuosl.org a try.  This is another primary FTP site
for Slackware that can be considerably faster than downloading
directly from ftp.slackware.com.

Thanks to the friendly folks at the OSU Open Source Lab
(http://osuosl.org) for donating additional FTP and rsync hosting
to the Slackware project!  :-)

Also see the "Get Slack" section on http://slackware.com for
additional mirror sites near you.

Updated package for Slackware 13.1:
ftp://ftp.slackware.com/pub/slackware/slackware-13.1/patches/packages/shadow-4.1.4.3-i486-1_slack13.1.txz

Updated package for Slackware x86_64 13.1:
ftp://ftp.slackware.com/pub/slackware/slackware64-13.1/patches/packages/shadow-4.1.4.3-x86_64-1_slack13.1.txz

Updated package for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/a/shadow-4.1.4.3-i486-1.txz

Updated package for Slackware x86_64 -current:
ftp://ftp.slackware.com/pub/slackware/slackware64-current/slackware64/a/shadow-4.1.4.3-x86_64-1.txz


MD5 signatures:
+-------------+

Slackware 13.1 package:
ba21ebb8fc8bc7b39644db3c5d4820da  shadow-4.1.4.3-i486-1_slack13.1.txz

Slackware x86_64 13.1 package:
e693c9f69b414061de8041bdae8bed7a  shadow-4.1.4.3-x86_64-1_slack13.1.txz

Slackware -current package:
d7e43c3da5bbb677587bbf275235f306  shadow-4.1.4.3-i486-1.txz

Slackware x86_64 -current package:
cc6dc5cf8d04bb61d0589911db8f3f64  shadow-4.1.4.3-x86_64-1.txz


Installation instructions:
+------------------------+

Upgrade the package as root:
# upgradepkg shadow-4.1.4.3-i486-1_slack13.1.txz


+-----+

Slackware Linux Security Team
http://slackware.com/gpg-key
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