Security Bulletin: Vulnerabilities in OpenSSL affect IBM WebSphere MQ (CVE-2016-2106, CVE-2016-2109)

Summary

OpenSSL vulnerabilities were disclosed on May 3, 2016 by the OpenSSL Project. OpenSSL is used by IBM WebSphere MQ. IBM WebSphere MQ has addressed the applicable CVEs.

Vulnerability Details

CVEID: CVE-2016-2106 DESCRIPTION: OpenSSL is vulnerable to a heap-based buffer overflow, caused by improper bounds checking by the EVP_EncryptUpdate() function. By sending an overly long argument, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 5.6
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/112856 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L)

CVEID: CVE-2016-2109 DESCRIPTION: OpenSSL is vulnerable to a denial of service, caused by a memory allocation error. By reading specially crafted ASN.1 data from a BIO using functions such as d2i_CMS_bio(), an attacker could exploit this vulnerability to consume all available resources and exhaust memory.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/112857 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

Affected Products and Versions

IBM WebSphere MQ V8.0 - Advanced Message Security on IBM i only

IBM WebSphere MQ 8.0.0.5 and previous levels of maintenance

Remediation/Fixes

IBM WebSphere MQ V8.0

Apply 8.0.0.6 maintenance level

Note: A fix for CVE-2016-2108 was provided in OpenSSL versions 1.0.1o and 1.0.2c and was previously addressed by IBM WebSphere MQ.

Workarounds and Mitigations

None