CVE-2023-23928
This allows tampering of JWS header and payload data if the service does not perform additional checks.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.46%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
reason-jose is a JOSE implementation in ReasonML and OCaml.`Jose.Jws.validate` does not check HS256 signatures. This allows tampering of JWS header and payload data if the service does not perform additional checks. Such tampering could expose applications using reason-jose to authorization bypass. Applications relying on JWS claims assertion to enforce security boundaries may be vulnerable to privilege escalation. This issue has been patched in version 0.8.2.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.46% probability · 39th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-347
- Affected
- reason-jose project/reason-jose
- Source
- security-advisories@github.com
References
- https://github.com/ulrikstrid/reason-jose/commit/36cd724db3cbec121757624da49072386bd869e5Patch, Third Party Advisory
- https://github.com/ulrikstrid/reason-jose/releases/tag/v0.8.2Release Notes, Third Party Advisory
- https://github.com/ulrikstrid/reason-jose/security/advisories/GHSA-7jj9-6qwv-wpm7Third Party Advisory
- https://github.com/ulrikstrid/reason-jose/commit/36cd724db3cbec121757624da49072386bd869e5Patch, Third Party Advisory
- https://github.com/ulrikstrid/reason-jose/releases/tag/v0.8.2Release Notes, Third Party Advisory
- https://github.com/ulrikstrid/reason-jose/security/advisories/GHSA-7jj9-6qwv-wpm7Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.