Security Bulletin: Vulnerabilities in OpenSSL affect IBM System x, BladeCenter and Flex Systems Unified Extensible Firmware Interface (UEFI) (CVE-2015-0286 CVE-2015-0288 CVE-2015-0289 CVE-2015-0209 CVE-2015-0287)

Summary

OpenSSL vulnerabilities were disclosed on March 19th, 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 have addressedthe applicable CVEs.

Vulnerability Details

Summary

OpenSSL vulnerabilities were disclosed on March 19th, 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 have addressed the applicable CVEs.

Vulnerability Details

CVE-ID: CVE-2015-0286

Description: OpenSSL is vulnerable to a denial of service, caused by an error in the ASN1_TYPE_cmp function when attempting to compare ASN.1 boolean types. An attacker could exploit this vulnerability to crash any certificate verification operation and cause a denial of service.

CVSS Base Score: 5
CVSS Temporal Score: See <http://exchange.xforce.ibmcloud.com/vulnerabilities/101666&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-2015-0288

Description: OpenSSL is vulnerable to a denial of service, caused by an error in the X509_to_X509_REQ function. An attacker could exploit this vulnerability to trigger a NULL pointer dereference.

CVSS Base Score: 5
CVSS Temporal Score: See <http://exchange.xforce.ibmcloud.com/vulnerabilities/101675&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-2015-0289

Description: OpenSSL is vulnerable to a denial of service, caused by the failure to properly handle missing outer ContentInfo by the PKCS#7 parsing code. An attacker could exploit this vulnerability using a malformed ASN.1-encoded PKCS#7 blob to trigger a NULL pointer dereference.

CVSS Base Score: 5
CVSS Temporal Score: See <http://exchange.xforce.ibmcloud.com/vulnerabilities/101669&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-2015-0209

Description: OpenSSL could allow a remote attacker to execute arbitrary code on the system, caused by a use-after-free error in the d2i_ECPrivateKey or EVP_PKCS82PKEY function. An attacker could exploit this vulnerability using a malformed Elliptic Curve (EC) private-key file to corrupt memory and execute arbitrary code on the system and cause a denial of service.

CVSS Base Score: 6.8
CVSS Temporal Score: See <http://exchange.xforce.ibmcloud.com/vulnerabilities/101674&gt; for current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:P)

CVE-ID: CVE-2015-0287

Description: OpenSSL is vulnerable to a denial of service, caused by an error related to the reuse of a structure in ASN.1 parsing. An attacker could exploit this vulnerability using an invalid write to corrupt memory and cause a denial of service.

CVSS Base Score: 5
CVSS Temporal Score: See <http://exchange.xforce.ibmcloud.com/vulnerabilities/101668&gt; for current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/Au:N/C:N/I:N/A:P)

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.

Tip: To locate UEFI fix versions on Fix Central search on the version prefix, such as “b2e1”, “fhe1” or “koe1”.

Workarounds and Mitigations

None.

Reference

• Complete CVSS V2 Guide
• On-line Calculator V2
• OpenSSL Project vulnerability website (for detail on what versions are affected)
• OpenSSL Advisory on above listed CVEs

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

Acknowledgement

None.

Change History
15 December 2015: Original Version Published
13 April 2016: Flex System x222 7916 added

• 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.