Security Bulletin: Resilient supports TLS1.2 ciphers that are not enabled for Perfect Forward Secrecy (PFS) (CVE-2021-20566)

Summary

Resilient supports TLS1.2 ciphers that are not enabled for Perfect Forward Secrecy (PFS). Such ciphers could allow an attacker who has recorded encrypted traffic and later obtains the server’s key to decrypt highly sensitive information.

Vulnerability Details

CVEID:CVE-2021-20566
**DESCRIPTION:**IBM Resilient OnPrem 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/199238 for the current score.
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

Remediation/Fixes

Users must upgrade to v41.0 of IBM Security SOAR (previously known as IBM Resilient) in order to obtain a fix for this vulnerability. Only TLS1.2 ciphers enabled for Perfect Forward Secrecy (PFS) are enabled.

You can upgrade the platform by following the instructions in the “Upgrade Procedure” section in the IBM Resilient Security Orchestration, Automation and Response Platform documentation.

Workarounds and Mitigations

None