Vulnerability in Simplex Chat
CVE-2022-45195
SimpleXMQ before 3.4.0, as used in SimpleX Chat before 4.2, does not apply a key derivation function to intended data, which can interfere with forward secrecy and can have other impacts if there is a compromise of a single private key. This occurs in the X3DH key exchange for the double ratchet protocol.
Vulnerability class: POODLE (CVE-2014-3566)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.006 (47.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 47.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000
Affected products
Weakness classification (CWE)
References
- github.com/trailofbits/publications/blob/master/reviews/SimpleXChat.pdf (Technical Description, Exploit, Third Party Advisory)
- simplex.chat/blog/20221108-simplex-chat-v4.2-security-audit-new-website.html (Release Notes, Vendor Advisory)
- github.com/simplex-chat/simplexmq/pull/548 (Patch, Third Party Advisory)
- github.com/simplex-chat/simplexmq/compare/v3.3.0...v3.4.0 (Third Party Advisory, Release Notes)
Frequently asked questions
- What is CVE-2022-45195?
- CVE-2022-45195 is a medium-severity vulnerability in Simplex Chat, classified under Use of a Broken or Risky Cryptographic Algorithm. CVSS score: 5.3/10. Published 2022-11-12.
- How severe is CVE-2022-45195?
- Medium severity. CVSS v3 base score is 5.3 out of 10.