CVE-2023-1732
- Source
- https://cve.org/CVERecord?id=CVE-2023-1732
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-1732.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2023-1732
- Aliases
- Downstream
- Related
- Published
- 2023-05-10T11:41:53.902Z
- Modified
- 2026-07-15T01:49:15.886712593Z
- 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
{ "cwe_ids": [ "CWE-20", "CWE-755" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/1xxx/CVE-2023-1732.json", "cna_assigner": "cloudflare" }- References
Affected packages
Git / github.com/cloudflare/circl
Affected ranges
- Type
- GIT
- Repo
- https://github.com/cloudflare/circl
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
- Database specific
{ "cpe": "cpe:2.3:a:cloudflare:circl:*:*:*:*:*:go:*:*", "extracted_events": [ { "introduced": "0" }, { "fixed": "<1.3.3" }, { "fixed": "1.3.3" } ], "source": [ "AFFECTED_FIELD", "CPE_RANGE" ] }