Security Bulletin: Vulnerabilities in OpenSSL affect System x, BladeCenter and Flex Systems Unified Extensible Firmware Interface (UEFI) (CVE-2014-3569, CVE-2014-3570, CVE-2014-3571, CVE-2014-3572, CVE-2014-8275)

Summary

OpenSSL vulnerabilities were disclosed on January 8, 2015 by the OpenSSL Project. OpenSSL is used by IBM System x, BladeCenter and Flex Systems Unified Extensible Firmware Interface (UEFI). IBM System x, BladeCenter and Flex Systems UEFI has addressed the applicable CVEs.

Vulnerability Details

Summary

OpenSSL vulnerabilities were disclosed on January 8, 2015 by the OpenSSL Project. OpenSSL is used by IBM System x, BladeCenter and Flex Systems Unified Extensible Firmware Interface (UEFI). IBM System x, BladeCenter and Flex Systems UEFI has addressed the applicable CVEs.

Vulnerability Details:

CVE-ID: CVE-2014-3569

Description: OpenSSL is vulnerable to a denial of service, caused by the failure to properly handle attempts to use unsupported protocols by the ssl23_get_client_hello function in s23_srvr.c. A remote attacker could exploit this vulnerability using an unexpected handshake to trigger a NULL pointer dereference and cause the daemon to crash.

CVSS Base Score: 5
CVSS Temporal Score: See <http://xforce.iss.net/xforce/xfdb/99706&gt; for current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVE-ID: CVE-2014-3570

Description: An unspecified error in OpenSSL related to the production of incorrect results on some platforms by Bignum squaring (BN_sqr) has an unknown attack vector and impact.

CVSS Base Score: 2.6
CVSS Temporal Score: See <http://xforce.iss.net/xforce/xfdb/99710&gt; for current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:H/Au:N/C:N/I:P/A:N)

CVE-ID: CVE-2014-3571

Description: OpenSSL is vulnerable to a denial of service, caused by a NULL pointer dereference when handling malicious messages. By sending a specially-crafted DTLS message, a remote attacker could exploit this vulnerability to cause a segmentation fault.

CVSS Base Score: 5
CVSS Temporal Score: See <http://xforce.iss.net/xforce/xfdb/99703&gt; for current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVE-ID: CVE-2014-3572

Description: OpenSSL could provide weaker than expected security. The client accepts a handshake using an ephemeral ECDH ciphersuite with the server key exchange message omitted. An attacker could exploit this vulnerability to launch further attacks on the system.

CVSS Base Score: 1.2
CVSS Temporal Score: See http://xforce.iss.net/xforce/xfdb/997055 for current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:L/AC:H/Au:N/C:N/I:P/A:N)

CVE-ID: CVE-2014-8275

Description: OpenSSL could allow a local attacker to bypass security restrictions, caused by the modification of the fingerprint without breaking the signature. An attacker could exploit this vulnerability using non-DER or invalid encodings outside the signed portion of a certificate bypass security restrictions and perform unauthorized actions.

CVSS Base Score: 1.2
CVSS Temporal Score: See <http://xforce.iss.net/xforce/xfdb/99709&gt; for current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:L/AC:H/Au:N/C:N/I:P/A:N)

Affected products and versions

Remediation/Fixes:

It is recommended to update to the firmware level listed below, or later version. Firmware updates are available through IBM Fix Central: <http://www.ibm.com/support/fixcentral/&gt; .

You should verify applying this fix does not cause any compatibility issues.

Workarounds and Mitigations:

None

References:

• Complete CVSS Guide
• On-line Calculator V2
• OpenSSL Project vulnerability website
• OpenSSL Advisory on above listed CVEs

Related Information:
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Acknowledgement

None

Change History
12 June 2015: Original Copy Published

• The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an “industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response.” IBM PROVIDES THE CVSS SCORES “AS IS” WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.