CVE-2024-36405 — liboqs is a C-language cryptographic library that provides implementations of po
liboqs is a C-language cryptographic library that provides implementations of post-quantum cryptography algorithms. A control-flow timing lean has been identified in the reference implementation of the Kyber key encapsulation mechanism when it is compiled with Clang 15-18 for `-O
Published
2024-06-10T12:47:17.934Z
Last modified
2024-08-02T03:37:05.189Z
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
01What is this vulnerability?
liboqs is a C-language cryptographic library that provides implementations of post-quantum cryptography algorithms. A control-flow timing lean has been identified in the reference implementation of the Kyber key encapsulation mechanism when it is compiled with Clang 15-18 for `-Os`, `-O1`, and other compilation options. A proof-of-concept local attack on the reference implementation leaks the…
02Affected products
| Vendor | Product | Versions |
|---|
| open-quantum-safe | liboqs | < 0.10.1 |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:
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07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2024-06-10T12:47:17.934Z
- Last modified: 2024-08-02T03:37:05.189Z
09References
- github.com — https://github.com/open-quantum-safe/liboqs/security/advisories/GHSA-f2v9-5498-2…
- github.com — https://github.com/open-quantum-safe/liboqs/commit/982c762c242ef549c914891b47bf6…
- github.com — https://github.com/pq-crystals/kyber/commit/9b8d30698a3e7449aeb34e62339d4176f11e…
- github.com — https://github.com/open-quantum-safe/liboqs/blob/7eecda6095c003ddded7175a1ffdf35…
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