CVEvulnerability
CVE-2023-29409
5.3 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2023-08-02
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 5.3 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
- Weaknesses
- CWE-400
Description
Extremely large RSA keys in certificate chains can cause a client/server to expend significant CPU time verifying signatures. With fix, the size of RSA keys transmitted during handshakes is restricted to <= 8192 bits. Based on a survey of publicly trusted RSA keys, there are currently only three certificates in circulation with keys larger than this, and all three appear to be test certificates that are not actively deployed. It is possible there are larger keys in use in private PKIs, but we target the web PKI, so causing breakage here in the interests of increasing the default safety of users of crypto/tls seems reasonable.
Affected configurations
• golang go (< 1.19.12)
• golang go (>= 1.20.0 < 1.20.7)
• golang go 1.21.0
Related
Weakness · CWE (1)
- CWE-400 Uncontrolled Resource Consumption weakness
References
- https://go.dev/cl/515257 Patch
- https://go.dev/issue/61460 Issue Tracking, Patch, Vendor Advisory
- https://groups.google.com/g/golang-announce/c/X0b6CsSAaYI/m/Efv5DbZ9AwAJ Mailing List, Vendor Advisory
- https://pkg.go.dev/vuln/GO-2023-1987 Patch, Vendor Advisory
- https://security.gentoo.org/glsa/202311-09 security.gentoo.org
- https://security.netapp.com/advisory/ntap-20230831-0010/ security.netapp.com
- https://go.dev/cl/515257 Patch
- https://go.dev/issue/61460 Issue Tracking, Patch, Vendor Advisory
- https://groups.google.com/g/golang-announce/c/X0b6CsSAaYI/m/Efv5DbZ9AwAJ Mailing List, Vendor Advisory
- https://pkg.go.dev/vuln/GO-2023-1987 Patch, Vendor Advisory
- https://security.gentoo.org/glsa/202311-09 security.gentoo.org
- https://security.netapp.com/advisory/ntap-20230831-0010/ security.netapp.com