CVE-2023-1732
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2023-1732
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-1732.json
- Aliases
- Published
- 2023-05-10T12:15:10Z
- Modified
- 2023-11-29T09:45:09.816945Z
- Details
-
When sampling randomness for a shared secret, the implementation of Kyber and FrodoKEM, did not check whether crypto/rand.Read() returns an error. In rare deployment cases (error thrown by the Read() function), this could lead to a predictable shared secret.
The tkn20 and blindrsa components did not check whether enough randomness was returned from the user provided randomness source. Typically the user provides crypto/rand.Reader, which in the vast majority of cases will always return the right number random bytes. In the cases where it does not, or the user provides a source that does not, the blinding for blindrsa is weak and integrity of the plaintext is not ensured in tkn20.
- References