Recorded TLS traffic decryption via non-PFS ciphers
Published Jun 16, 2021 · Updated Sep 16, 2024
Weak cryptography in IBM Security QRadar SOAR 38 allows attackers to decrypt recorded TLS traffic after obtaining the server key. Its TLS 1.2 listener enables cipher suites without perfect forward secrecy, so later key compromise exposes previously captured sessions. Exploitation requires both prior traffic capture and subsequent possession of the server key, and the reported consequence is disclosure only.
Summary
What happened
Weak cryptography in IBM Security QRadar SOAR 38 allows attackers to decrypt recorded TLS traffic after obtaining the server key. Its TLS 1.2 listener enables cipher suites without perfect forward secrecy, so later key compromise exposes previously captured sessions. Exploitation requires both prior traffic capture and subsequent possession of the server key, and the reported consequence is disclosure only.
The record
- CVE
- CVE-2021-20566
- Published
- Jun 16, 2021
- Updated
- Sep 16, 2024
- Vendor
- IBM
- Product
- IBM Security QRadar SOAR
- Classifications
- CWE-327, T1040
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 16, 2021CVE publishedPublication date reported by the CVE source.
- Sep 16, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=38
What conditions does exploitation require?
What is affected?
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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