(Attachmate Issues Fix for Reflection) OpenSSL Bugs Let Remote Users Deny Service, Obtain Information, and Potentially Execute Arbitrary Code
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SecurityTracker Alert ID: 1026661 |
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SecurityTracker URL: http://securitytracker.com/id/1026661
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CVE Reference:
CVE-2011-4576
(Links to External Site)
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Date: Feb 10 2012
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Impact:
Denial of service via network, Disclosure of user information, Execution of arbitrary code via network, User access via network
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Fix Available: Yes Vendor Confirmed: Yes
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Description:
Several vulnerabilities were reported in OpenSSL. A remote user can cause denial of service conditions. A remote user can obtain sensitive information. A remote user may be able to execute arbitrary code on the target system. Attachmate Reflection is affected.
A remote user can conduct an efficient plaintext recovery attack against the OpenSSL implementation of Datagram Transport Layer Security (DTLS) [CVE-2011-4108, CVE-2012-0390]. Nadhem Alfardan and Kenny Paterson of the Information Security Group at Royal Holloway, University of London (www.isg.rhul.ac.uk) reported this vulnerability.
A remote user can trigger a double-free memory error when a policy check fails [CVE-2011-4109]. Version 0.9.8 systems with the X509_V_FLAG_POLICY_CHECK set are affected. Ben Laurie reported this vulnerability.
The bytes used as block cipher padding in SSL 3.0 records are not cleared. A remote user may be able to conduct a SSL 3.0 handshake to obtain memory contents [CVE-2011-4576]. Adam Langley reported this vulnerability.
Specially crafted RFC 3779 data within a certificate may cause an assertion failure [CVE-2011-4577]. System builds configured with "enable-rfc3779" are affected. Andrew Chi, BBN Technologies, reported this vulnerability.
A remote user can exploit a flaw in handshake restarts for server gated cryptography (SGC) to cause denial of service conditions on the target system [CVE-2011-4619]. Adam Langley reported this vulnerability.
A remote user can send specially crafted GOST parameters to cause the target server to crash [CVE-2012-0027]. OpenSSL GOST ENGINE users are affected. Andrey Kulikov reported this vulnerability.
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Impact:
A remote user may be able to execute arbitrary code on the target system.
A remote user can cause the target server to crash.
A remote user can obtain plaintext in certain cases.
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Solution:
Attachmate has issued a hotfix for CVE-2011-4576 for Reflection.
The Attachmate advisories are available at:
http://support.attachmate.com/techdocs/1708.html
http://support.attachmate.com/techdocs/2502.html
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Cause:
Access control error, Exception handling error, Input validation error, State error
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Underlying OS:
OpenVMS, UNIX (Any), Windows (Any)
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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: Fri, 10 Feb 2012 18:57:14 +0000
Subject: Attachmate Reflection
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http://support.attachmate.com/techdocs/1708.html
http://support.attachmate.com/techdocs/2502.html
CVE-2011-4576
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