HPSBUX02638 SSRT100339 rev.1 - HP-UX Running OpenSSL, Remote Executionof Arbitrary Code, Denial of Service (DoS), Authentication Bypass (ITRCLogin Required)

Original Release Date: April 4, 2011
Last Revised: April 24, 2012
Number: ASA-2011-082
Risk Level: Medium
Advisory Version: 2.0
Advisory Status: Final

1. Overview:

Title: HPSBUX02638 SSRT100339 rev.1 - HP-UX Running OpenSSL, Remote Executionof Arbitrary Code, Denial of Service (DoS), Authentication Bypass (ITRCLogin Required)
Potential Impact: A potential security vulnerability has been identified with HP-UX OpenSSL. This vulnerability could be exploited remotely to execute arbitrary code or create a Denial of Service (DoS) or an authentication bypass.
Affected Versions: HP-UX B.11.11, B.11.23, B.11.31 running OpenSSL before vA.00.09.08q

Multiple race conditions in ssl/t1_lib.c in OpenSSL 0.9.8f through 0.9.8o, 1.0.0, and 1.0.0a, when multi-threading and internal caching are enabled on a TLS server, might allow remote attackers to execute arbitrary code via client data that triggers a heap-based buffer overflow, related to (1) the TLS server name extension and (2) elliptic curve cryptography. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2010-3864 to this issue.

OpenSSL before 0.9.8q, and 1.0.x before 1.0.0c, when SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG is enabled, does not properly prevent modification of the ciphersuite in the session cache, which allows remote attackers to force the downgrade to an unintended cipher via vectors involving sniffing network traffic to discover a session identifier. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2010-4180 to this issue.

OpenSSL before 1.0.0c, when J-PAKE is enabled, does not properly validate the public parameters in the J-PAKE protocol, which allows remote attackers to bypass the need for knowledge of the shared secret, and successfully authenticate, by sending crafted values in each round of the protocol. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the name CVE-2010-4252 to this issue.

More information about this vulnerability can be found in the security advisory issued by HP-UX:

2. Avaya System Products with HP-UX running OpenSSL :

Product: Affected Version(s): Risk Level: Actions:
Avaya Proactive Contact 3.0.4 Medium Upgrade to PC 4.2 or later.

Recommended Actions for System Products:
Avaya strongly recommends that customers follow networking and security best practices by implementing firewalls, ACLs, physical security or other appropriate access restrictions. Though Avaya believes such restrictions should always be in place, risk to Avaya products and the surrounding network from this potential vulnerability may be mitigated by ensuring these practices are implemented until such time as an Avaya provided product update or the recommended Avaya action is applied. Further restrictions as deemed necessary based on the customer's security policies may be required during this interim period, but customers should not modify the System Product operating system or application unless the change is approved by Avaya. Making changes that are not approved may void the Avaya product service contract.

3. Additional Information:

Additional information may also be available via the Avaya support website and through your Avaya account representative. Please contact your Avaya product support representative, or dial 1-800-242-2121, with any questions.

4. Disclaimer:

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THE INFORMATION PROVIDED HERE DOES NOT AFFECT THE SUPPORT AGREEMENTS IN PLACE FOR AVAYA PRODUCTS. SUPPORT FOR AVAYA PRODUCTS CONTINUES TO BE EXECUTED AS PER EXISTING AGREEMENTS WITH AVAYA.

5. Revision History:

V 1.0 - April 4, 2011 - Initial Statement issued.
V 2.0 - April 24, 2012 - Updated PC action, changed Advisory Status to Final.

Send information regarding any discovered security problems with Avaya products to either the contact noted in the product's documentation or securityalerts@avaya.com.

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