CVE-2023-1732
- Source
- https://cve.org/CVERecord?id=CVE-2023-1732
- Import Source
- https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2023-1732.json
- JSON Data
- https://api.test.osv.dev/v1/vulns/CVE-2023-1732
- Aliases
- Downstream
- Related
- Published
- 2023-05-10T11:41:53.902Z
- Modified
- 2026-05-18T05:57:01.704477417Z
- Severity
-
- 5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:N CVSS Calculator
- Summary
- Improper random reading in CIRCL
- 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.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/1xxx/CVE-2023-1732.json", "cna_assigner": "cloudflare", "cwe_ids": [ "CWE-20", "CWE-755" ] }- References