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.
References
Link | Resource |
---|---|
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 | |
https://security.netapp.com/advisory/ntap-20230831-0010/ |
History
No history.
MITRE Information
Status: PUBLISHED
Assigner: Go
Published: 2023-08-02T19:47:23.829Z
Updated: 2023-08-02T19:47:23.829Z
Reserved: 2023-04-05T19:36:35.043Z
Link: CVE-2023-29409
JSON object: View
NVD Information
Status : Modified
Published: 2023-08-02T20:15:11.940
Modified: 2023-11-25T11:15:14.870
Link: CVE-2023-29409
JSON object: View
Redhat Information
No data.
CWE