Security Bulletin
Summary
There is a vulnerability in IBM® Runtime Environment Java™ Technology Edition, Versions 7.0.5 and 6.0.14 that are used by IBM Sterling Connect:Direct FTP+. 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. This vulnerability is commonly referred to as “SLOTH”.
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/UI:U/C:H/I:L/A:N)
Affected Products and Versions
IBM Sterling Connect:Direct FTP+ 1.3.0
Remediation/Fixes
|
V.R.M | APAR | Remediation |
| 1.3.0 | IT14195 IT14554 | For all platforms except for HP-UX on Itanium, apply 1.3.0 Fix002, available on Fix Central For HP-UX on Itanium, apply 1.3.0 Fix003, available on Fix Central |
Workarounds and Mitigations
For all platforms except for HP-UX on PA_RISC, the following mitigation is available. It is an optional alternative to applying the fix.
- Edit the {C:D FTP+ installation directory}/jre/lib/security/java.security file.
- Add MD5 to jdk.certpath.disabledAlgorithms - for example, certpath.disabledAlgorithms=MD2, RSA keySize < 1024,MD5
- Add MD5withRSA to jdk.tls.disabledAlgorithms - for example, jdk.tls.disabledAlgorithms=SSLv3, RC4, DH keySize < 768,MD5withRSA
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Important Note
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References
Acknowledgement
CVE-2015-7575 was reported to IBM by Karthikeyan Bhargavan at INRIA in Paris, France
Change History
10 March 2016: Original version published
13 April 2016: Added fix for HP-UX on Itanium
*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:
24 July 2020
UID
swg21976763