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Security Bulletin: IBM Security Key Lifecycle Manager uses weaker than expected cryptographic algorithms (CVE-2019-4516)

Security Bulletin


Summary

IBM Security Key Lifecycle Manager uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information.

Vulnerability Details

CVEID: CVE-2018-1751
DESCRIPTION: IBM Tivoli Key Lifecycle Manager uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/148512 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)

CVEID: CVE-2019-4516
DESCRIPTION: IBM Tivoli Key Lifecycle Manager uses weaker than expected cryptographic algorithms that could allow an attacker to decrypt highly sensitive information.
CVSS Base Score: 5.9
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/165138 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)

Affected Products and Versions

Principal Product and Version(s)
IBM Security Key Lifecycle Manager (SKLM) v3.0 - v3.0.0.3 on distributed platforms
IBM Security Key Lifecycle Manager (SKLM) v3.0.1- v3.0.1.2 on distributed platforms

Workarounds and Mitigations

For SKLM v3.0 - 3.0.0.3 and v3.0.1 - 3.0.1.2,  if found affected, you may follow the steps below to mitigate the issue:
1) Use Update Config Property REST Service or  tklmConfigUpdateEntry  CLI to update the property "Transport.ssl.vulnerableciphers.patterns".
2) Value of the property should be pattern that user wants to block.
        Example :To block all the ciphers with DES , property and its value would be:
         Transport.ssl.vulnerableciphers.patterns=_RC4_,RSA_EXPORT,_DES_
        This will ensure that all the ciphers with DES are blocked.

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References

On

Acknowledgement

IBM X-Force Ethical Hacking Team: Warren Moynihan, Jonathan Fitz-Gerald, John Zuccato, Rodney Ryan, Chris Shepherd, Dmitriy Beryoza

*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.

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Document Information

Modified date:
02 October 2019

UID

ibm10791829