Security Bulletin
Summary
The MD5 “SLOTH” vulnerability on TLS 1.2 affects IBM® FlashSystem™ 840.
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
FlashSystem 840 systems are affected when running code levels before 1.1.3.8. Code levels starting 1.2, 1.3, and 1.4 are not affected. MTMs affected include 9840-AE1 and 9843-AE1.
Remediation/Fixes
If the code level your machine is running is affected, IBM recommends that you fix this vulnerability by upgrading the 840 to one of the following code levels or higher:
| MTMs | VRMF | APAR | Remediation/First Fix |
| FlashSystem 840 MTM: 9840-AE1 & 9843-AE1 | Code fixes are now available, the minimum VRMF containing the fix depends on the code stream: Fixed code VRMF . 1.4 stream: 1.4.0.7 (or later) 1.3 stream: 1.3.0.2 (or later) 1.2 stream: 1.2.1.7 (or later) 1.1 stream: 1.1.3.8 (or later) | N/A | No workarounds or mitigations, other than applying this code fix, are known for this vulnerability |
FlashSystem 840 fixes are available @ IBM’s Fix Central
Workarounds and Mitigations
None
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References
Acknowledgement
None
Change History
14 January 2016 Original Version 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
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
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Document Information
Modified date:
17 February 2023
UID
ssg1S1005585