GHSA-2q89-485c-9j2x
Suggest an improvement- Source
- https://github.com/advisories/GHSA-2q89-485c-9j2x
- Import Source
- https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2023/05/GHSA-2q89-485c-9j2x/GHSA-2q89-485c-9j2x.json
- JSON Data
- https://api.osv.dev/v1/vulns/GHSA-2q89-485c-9j2x
- Aliases
- Related
- Published
- 2023-05-11T20:40:54Z
- Modified
- 2023-11-08T04:11:18.953209Z
- 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
-
Impact
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 theRead()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.Patches
The fix was introduced in CIRCL v. 1.3.3
- References
Affected packages
Go / github.com/cloudflare/circl
Package
- Name
- github.com/cloudflare/circl
- View open source insights on deps.dev
- Purl
- pkg:golang/github.com/cloudflare/circl