CVEvulnerability
CVE-2023-45287
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2023-12-05
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weaknesses
- CWE-203
Description
Before Go 1.20, the RSA based TLS key exchanges used the math/big library, which is not constant time. RSA blinding was applied to prevent timing attacks, but analysis shows this may not have been fully effective. In particular it appears as if the removal of PKCS#1 padding may leak timing information, which in turn could be used to recover session key bits. In Go 1.20, the crypto/tls library switched to a fully constant time RSA implementation, which we do not believe exhibits any timing side channels.
Affected configurations
• golang go (< 1.20.0)
Related
Weakness · CWE (1)
- CWE-203 Observable Discrepancy weakness
References
- https://go.dev/cl/326012/26 Issue Tracking
- https://go.dev/issue/20654 Issue Tracking
- https://groups.google.com/g/golang-announce/c/QMK8IQALDvA Mailing List, Release Notes
- https://people.redhat.com/~hkario/marvin/ Third Party Advisory
- https://pkg.go.dev/vuln/GO-2023-2375 Vendor Advisory
- https://security.netapp.com/advisory/ntap-20240112-0005/ security.netapp.com
- https://go.dev/cl/326012/26 Issue Tracking
- https://go.dev/issue/20654 Issue Tracking
- https://groups.google.com/g/golang-announce/c/QMK8IQALDvA Mailing List, Release Notes
- https://people.redhat.com/~hkario/marvin/ Third Party Advisory
- https://pkg.go.dev/vuln/GO-2023-2375 Vendor Advisory
- https://security.netapp.com/advisory/ntap-20240112-0005/ security.netapp.com