– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Gentoo Linux Security Advisory GLSA 201408-14
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
http://security.gentoo.org/
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Severity: Normal
Title: stunnel: Information disclosure
Date: August 29, 2014
Bugs: #503506
ID: 201408-14
– – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – –
Synopsis
========
A vulnerability in stunnel might allow remote attackers to gain access
to private key information.
Background
==========
The stunnel program is designed to work as an SSL encryption wrapper
between a client and a local or remote server.
Affected packages
=================
——————————————————————-
Package / Vulnerable / Unaffected
——————————————————————-
1 net-misc/stunnel < 5.02 >= 5.02
Description
===========
stunnel does not properly update the state of the pseudo-random
generator after fork-threading which causes subsequent children with
the same process ID to use the same entropy pool. ECDSA and DSA keys,
when not used in deterministic mode (RFC6979), rely on random data for
its k parameter to not leak private key information.
Impact
======
A remote attacker may gain access to private key information from ECDSA
or DSA keys.
Workaround
==========
There is no known workaround at this time.
Resolution
==========
All stunnel users should upgrade to the latest version:
# emerge –sync
# emerge –ask –oneshot –verbose “>=net-misc/stunnel-5.02”
References
==========
[ 1 ] CVE-2014-0016
http://nvd.nist.gov/nvd.cfm?cvename=CVE-2014-0016
Availability
============
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
http://security.gentoo.org/glsa/glsa-201408-14.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 2014 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
—–BEGIN PGP SIGNATURE—–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=y7io
—–END PGP SIGNATURE—–
