(Sun Issues Fix) GnuTLS X.509 Certificate Chain Validation Bug Permits Man-in-the-Middle Attacks
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SecurityTracker Alert ID: 1022372 |
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SecurityTracker URL: http://securitytracker.com/id/1022372
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CVE Reference:
CVE-2008-4989
(Links to External Site)
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Date: Jun 11 2009
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Impact:
Modification of system information
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): prior to 2.6.1
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Description:
A vulnerability was reported in GnuTLS. A remote user that can conduct a man-in-the-middle attack can spoof valid certificates.
The libgnutls component does not properly validate X.509 certificate chains. A remote user with the ability to conduct a man-in-the-middle attack can cause GNU TLS clients to trust arbitrary sites.
The vulnerability resides in 'lib/x509/verify.c'.
Martin von Gagern reported this vulnerability.
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Impact:
A remote user that can conduct a man-in-the-middle attack can spoof certificates for arbitrary sites.
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Solution:
Sun has issued a fix.
SPARC Platform
* Solaris 10 with patch 123938-02 or later
* OpenSolaris based upon builds snv_111a or later
x86 Platform
* Solaris 10 with patch 123939-02 or later
* OpenSolaris based upon builds snv_111a or later
The Sun advisory is available at:
http://sunsolve.sun.com/search/document.do?assetkey=1-66-260528-1
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Vendor URL: www.gnu.org/software/gnutls/security.html (Links to External Site)
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Cause:
Authentication error
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Underlying OS:
UNIX (Solaris - SunOS)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Thu, 11 Jun 2009 07:18:17 -0400
Subject: http://sunsolve.sun.com/search/document.do?assetkey=1-66-260528-1
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CVE-2008-4989
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