IBMF6F627C30F0F2510131490115C02D3F1E8EC3AE95BC4A9958D8F6CA2E2AE68E8Security Bulletin: Vulnerability in IBM Java Runtime affects IBM MQ Light (CVE-2015-7575)
EPSS
Percentile
69.2%
Summary
There is a vulnerability in IBM® Runtime Environment Java™ Technology Edition, Version 7R1 Service Refresh 3 Fix Pack 1 and earlier releases that is used by IBM MQ Light. This vulnerability, commonly referred to as “SLOTH”, was disclosed as part of the IBM Java SDK updates in January 2016.
Vulnerability Details
CVEID: CVE-2015-7575**
DESCRIPTION:** The TLS protocol could allow weaker than expected security caused by a collision attack when using the MD5 hash function for signing a ServerKeyExchange message during a TLS handshake. An attacker could exploit this vulnerability using man-in-the-middle techniques to impersonate a TLS server and obtain credentials.
CVSS Base Score: 7.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/109415 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N)
Affected Products and Versions
The vulnerability affects users of IBM MQ Light V1.0, V1.0.1 and V1.0.2 on all platforms.
Remediation/Fixes
Download and install the appropriate MQ Light Server for your platform as shown below:
| Platform | License Type | APAR | Remediation/Fix |
|---|---|---|---|
| Windows | Developer | IT13531 | Interim fix for IT13531 (MQ Light Developer on Windows) |
| Windows | Production | IT13531 | Interim fix for IT13531 (MQ Light Production on Windows) |
| Linux | Developer | IT13531 | Interim fix for IT13531 (MQ Light Developer on Linux) |
| Linux | Production | IT13531 | Interim fix for IT13531 (MQ Light Production on Linux) |
| Mac | Developer | IT13531 | Interim fix for IT13531 (MQ Light Developer on Mac) |
The following link describes how to re-use the data from your existing installation:
_http://www.ibm.com/support/knowledgecenter/SSBJCR_1.0.0/com.ibm.mq.koa.doc/tmql_data.htm _
Workarounds and Mitigations
Edit the following file:
Windows - <installation directory>\runtime\java\jre\lib\security\java.security
Linux - <installation directory>/runtime/java/jre64/jre/lib/security/java.security
Mac - <installation directory>/runtime/java/jre64/Contents/Home/lib/security/java.security
Add MD5 to the jdk.certpath.disabledAlgorithms property. For example:
jdk.certpath.disabledAlgorithms=MD2, RSA keySize < 1024, **MD5**
Add MD5withRSA to the jdk.tls.disabledAlgorithms property. For example:
jdk.tls.disabledAlgorithms=SSLv3, RC4, DH keySize < 768, **MD5withRSA**
The MQ Light Server will need to be restarted for the changes to take effect.
Related
EPSS
Percentile
69.2%