Login
Newsletter
Werbung

Sicherheit: Denial of Service in Cyrus-SASL
Aktuelle Meldungen Distributionen
Name: Denial of Service in Cyrus-SASL
ID: 201309-01
Distribution: Gentoo
Plattformen: Keine Angabe
Datum: Mo, 2. September 2013, 07:57
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2013-4122
Applikationen: Cyrus SASL

Originalnachricht

This is an OpenPGP/MIME signed message (RFC 4880 and 3156)
------enig2ETKKWNJXUHVOUPTTKNXP
Content-Type: text/plain; charset=ISO-8859-
Content-Transfer-Encoding: quoted-printable

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Gentoo Linux Security Advisory GLSA 201309-01
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
http://security.gentoo.org/
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Severity: Normal
Title: Cyrus-SASL: Denial of Service
Date: September 01, 2013
Bugs: #476764
ID: 201309-01

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Synopsis
========

A NULL pointer dereference in Cyrus-SASL may allow remote attackers to
cause a Denial of Service condition.

Background
==========

Cyrus-SASL is an implementation of the Simple Authentication and
Security Layer.

Affected packages
=================

-------------------------------------------------------------------
Package / Vulnerable / Unaffected
-------------------------------------------------------------------
1 dev-libs/cyrus-sasl < 2.1.26-r3 >= 2.1.26-r3

Description
===========

In the GNU C Library (glibc) from version 2.17 onwards, the crypt()
function call can return NULL when the salt violates specifications or
the system is in FIPS-140 mode and a DES or MD5 hashed password is
passed. When Cyrus-SASL's authentication mechanisms call crypt(), a
NULL may be returned.

Impact
======

A remote attacker could trigger this vulnerability to cause a Denial of
Service condition.

Workaround
==========

There is no known workaround at this time.

Resolution
==========

All Cyrus-SASL users should upgrade to the latest version:

# emerge --sync
# emerge --ask --oneshot --verbose
">=dev-libs/cyrus-sasl-2.1.26-r3"

References
==========

[ 1 ] CVE-2013-4122
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2013-4122

Availability
============

This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:

http://security.gentoo.org/glsa/glsa-201309-01.xml

Concerns?
=========

Security is a primary focus of Gentoo Linux and ensuring the
confidentiality and security of our users' machines is of utmost
importance to us. Any security concerns should be addressed to
security@gentoo.org or alternatively, you may file a bug at
https://bugs.gentoo.org.

License
=======

Copyright 2013 Gentoo Foundation, Inc; referenced text
belongs to its owner(s).

The contents of this document are licensed under the
Creative Commons - Attribution / Share Alike license.

http://creativecommons.org/licenses/by-sa/2.5


------enig2ETKKWNJXUHVOUPTTKNXP
Content-Type: application/pgp-signature; name="signature.asc"
Content-Description: OpenPGP digital signature
Content-Disposition: attachment; filename="signature.asc"

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.20 (GNU/Linux)
Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/

iKYEARECAGYFAlIjnxdfFIAAAAAALgAoaXNzdWVyLWZwckBub3RhdGlvbnMub3Bl
bnBncC5maWZ0aGhvcnNlbWFuLm5ldEM2NzU5RjUyMDczREJDQkVDQTBDRkE1NERC
Nzk1QThBNDI2MTgzNTQACgkQ23laikJhg1TrMQCfXrCf/1AG/+Tqs1yhALfBj612
5e4An3biGW7lOKM+/Dg240P/tIQN5Pa4
=VQ2T
-----END PGP SIGNATURE-----

------enig2ETKKWNJXUHVOUPTTKNXP--
Pro-Linux
Traut euch!
Neue Nachrichten
Werbung