Search criteria
2 vulnerabilities found for circl by cloudflare
CVE-2023-1732 (GCVE-0-2023-1732)
Vulnerability from nvd – Published: 2023-05-10 11:41 – Updated: 2025-01-27 18:32
VLAI?
Title
Improper random reading in CIRCL
Summary
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.
Severity ?
5.3 (Medium)
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Cloudflare | CIRCL |
Affected:
0 , < <1.3.3
(semver)
|
Credits
Tom Thorogood
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CVE-2023-1732 (GCVE-0-2023-1732)
Vulnerability from cvelistv5 – Published: 2023-05-10 11:41 – Updated: 2025-01-27 18:32
VLAI?
Title
Improper random reading in CIRCL
Summary
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.
Severity ?
5.3 (Medium)
Assigner
References
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Cloudflare | CIRCL |
Affected:
0 , < <1.3.3
(semver)
|
Credits
Tom Thorogood
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