Connection-secret disclosure via omitted X3DH key derivation
Published Nov 12, 2022 · Updated May 1, 2025
Cryptographic weakness in SimpleXMQ before 3.4.0 and SimpleX Chat before 4.2 allows attackers with a compromised key to read connection secrets. The X3DH implementation concatenates three Diffie-Hellman results without applying a key derivation function before initializing the double ratchet. Exploitation requires compromise of one client-generated private key and affects only that connection until both parties send messages and break-in recovery completes.
Summary
What happened
Cryptographic weakness in SimpleXMQ before 3.4.0 and SimpleX Chat before 4.2 allows attackers with a compromised key to read connection secrets. The X3DH implementation concatenates three Diffie-Hellman results without applying a key derivation function before initializing the double ratchet. Exploitation requires compromise of one client-generated private key and affects only that connection until both parties send messages and break-in recovery completes.
The record
- CVE
- CVE-2022-45195
- Published
- Nov 12, 2022
- Updated
- May 1, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-327
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Nov 12, 2022CVE publishedPublication date reported by the CVE source.
- May 1, 2025Record updatedLatest update available in the CVE record.
Exploitability
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What is affected?
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Published CVSS scores
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Attacks
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Weakness, pattern, technique
Public exploit references
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Technologies
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