(NetBSD Issues Fix) OpenSSL CMS_verify() Error Handling Flaw Lets Users Bypass Security Checks
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SecurityTracker Alert ID: 1022523 |
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SecurityTracker URL: http://securitytracker.com/id/1022523
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CVE Reference:
CVE-2009-0591
(Links to External Site)
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Date: Jul 8 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): 0.9.8h - 0.9.8j
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Description:
A vulnerability was reported in OpenSSL. A remote user can bypass certain security checks.
A remote user with access to a signer's private key can generate a specially crafted signature that is not valid but will be detected as valid. The vulnerability resides in the CMS_verify() function in the handling of an error condition with specially crafted signed attributes.
Only CMS users are affected.
Ivan Nestlerode reported this vulnerability.
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Impact:
A remote user can create an invalid signature that will be determined to be a valid signature.
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Solution:
NetBSD has issued a fix for NetBSD 4.0.*.
The NetBSD advisory is available at:
http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2009-008.txt.asc
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Vendor URL: www.openssl.org/news/secadv_20090325.txt (Links to External Site)
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Cause:
Authentication error, State error
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Underlying OS:
UNIX (NetBSD)
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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: Wed, 8 Jul 2009 13:58:08 -0400
Subject: NetBSD
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ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2009-008.txt.asc
CVE-2009-0590, CVE-2009-0591 and CVE-2009-0789
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