Security Bulletin
Summary
TLS vulnerability, named SLOTH, was disclosed in December 2015. IBM SONAS has addressed this vulnerability.
Vulnerability Details
OpenSSL is used in IBM SONAS for providing communication security by encrypting data being transmitted.
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
IBM SONAS
The product is affected when running a code releases 1.5.0.0 to 1.5.2.3
Remediation/Fixes
A fix for these issues is in version 1.5.2.4 of IBM SONAS. Customers running an affected version of SONAS should upgrade to 1.5.2.4 or a later version, so that the fix gets applied.
Please contact IBM support for assistance in upgrading your system.
Workarounds and Mitigations
Workaround(s): None
Mitigation(s): Ensure that all users who have access to the system are authenticated by another security system such as a firewall.
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References
Change History
22 March 2016 : First draft
*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
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
Internal Use Only
CQ S1061106 [PSIRT 4484] IBM product record 67637 for SONAS and 67684 for IFS - EXPEDITED Weak MD5 Signature Hash - SLOTH
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Document Information
Modified date:
17 June 2018
UID
ssg1S1005722