Gentoo: 202303-12 Critical: OpenSSL Buffer Overflow Vulnerability
gentoo
February 29, 2012
A vulnerability was found in stunnel, allowing remote attackers to cause a Denial of Service and potentially arbitrary code execution.
Summary
An unspecified heap vulnerability was discovered in stunnel.
Resolution
All stunnel users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose ">=net-misc/stunnel-4.44"
References
[ 1 ] CVE-2011-2940 http://nvd.nist.gov/nvd.cfm?cvename=CVE-2011-2940
Availability
This GLSA and any updates to it are available for viewing at
the Gentoo Security Website:
https://security.gentoo.org/glsa/201202-08
style>.gentoo_availability{display:block;}
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.
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Severity
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Critical
Severity: Normal
Title: stunnel: Arbitrary code execution
Date: February 29, 2012
Bugs: #379859
ID: 201202-08
Background
The stunnel program is designed to work as an SSL encryption wrapper
between a client and a local or remote server.
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Affected Packages
-------------------------------------------------------------------
Package / Vulnerable / Unaffected
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1 net-misc/stunnel < 4.44 >= 4.44
Impact
=====
The vulnerability may possibly be leveraged to perform remote code
execution or a Denial of Service attack.
Workaround
There is no known workaround at this time.
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