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Security Bulletin: Spectrum Protect Operations Center vulnerable to Logjam (CVE-2015-4000)

Security Bulletin


Summary

A port used by Operations Center is reported to be vulnerable to Logjam (CVE-2015-4000).

Vulnerability Details

CVEID: CVE-2015-4000
DESCRIPTION: The TLS protocol could allow a remote attacker to obtain sensitive information, caused by the failure to properly convey a DHE_EXPORT ciphersuite choice. An attacker could exploit this vulnerability using man-in-the-middle techniques to force a downgrade to 512-bit export-grade cipher. Successful exploitation could allow an attacker to recover the session key as well as modify the contents of the traffic. This vulnerability is commonly referred to as "Logjam".
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/103294 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N)

Affected Products and Versions

IBM Spectrum Protect Operations Center affected levels are 8.1.3 through 8.1.7.  Note that 7.1 is not affected.

Remediation/Fixes

IBM Spectrum Protect
Operations Center Release
First Fixing
VRM Level
APAR Platform Link to Fix
            8.1 8.1.8 IT30213 AIX
Linux
Windows

Workarounds and Mitigations

IBM Spectrum Protect Operations Center 8.1.3 through 8.1.7, can add the following statements to the java security file (/opt/tivoli/tsm/jre/lib/security/java.security) to eliminate exposure to this vulnerability:

jdk.certpath.disabledAlgorithms=MD2,MD5,SHA1 usage TLSServer TLSClient SignedJAR, RSA keySize < 1024, DSA keySize < 1024, EC keySize < 256, DSS
jdk.tls.disabledAlgorithms=SSLv3, TLSv1, TLSv1.1, DH keySize < 2048,  EC keySize < 256, DSS, 3DES_EDE_CBC, DES, DESede, RC4, MD5, SHA1, TLS_RSA_WITH_AES_128_CBC_SHA, TLS_RSA_WITH_AES_128_CBC_SHA256, TLS_RSA_WITH_AES_256_CBC_SHA, TLS_RSA_WITH_AES_256_CBC_SHA256, TLS_RSA_WITH_AES_128_GCM_SHA256, TLS_RSA_WITH_AES_256_GCM_SHA384, anon, NULL, GCM
jdk.tls.ephemeralDHKeySize=2048

jdk.tls.rejectClientInitiatedRenegotiation=true

Get Notified about Future Security Bulletins

References

Off

Change History

10 September 2019 - 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

According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY.

Internal Use Only

Advisory 17913 Product Record 144079

Document Location

Worldwide

[{"Business Unit":{"code":"BU010","label":"Systems - Storage"},"Product":{"code":"SSEQVQ","label":"IBM Spectrum Protect"},"Component":"Operations Center","Platform":[{"code":"PF002","label":"AIX"},{"code":"PF016","label":"Linux"},{"code":"PF033","label":"Windows"}],"Version":"8.1","Edition":""}]

Document Information

Modified date:
10 September 2019

UID

ibm11073000