Vulnerability Details : CVE-2023-29409
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.
Products affected by CVE-2023-29409
- cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*
- cpe:2.3:a:golang:go:*:*:*:*:*:*:*:*
- cpe:2.3:a:golang:go:1.21.0:rc1:*:*:*:*:*:*
- cpe:2.3:a:golang:go:1.21.0:rc2:*:*:*:*:*:*
- cpe:2.3:a:golang:go:1.21.0:rc3:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-29409
0.08%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 25 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-29409
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
3.9
|
1.4
|
NIST |
CWE ids for CVE-2023-29409
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The product does not properly control the allocation and maintenance of a limited resource.Assigned by:
- nvd@nist.gov (Primary)
- security@golang.org (Secondary)
References for CVE-2023-29409
-
https://groups.google.com/g/golang-announce/c/X0b6CsSAaYI/m/Efv5DbZ9AwAJ
[security] Go 1.20.7 and Go 1.19.12 are releasedMailing List;Vendor Advisory
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https://go.dev/issue/61460
crypto/tls: verifying certificate chains containing large RSA keys is slow [CVE-2023-29409] · Issue #61460 · golang/go · GitHubIssue Tracking;Patch;Vendor Advisory
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https://go.dev/cl/515257
crypto/tls: restrict RSA keys in certificates to <= 8192 bits (515257) · Gerrit Code ReviewPatch
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https://pkg.go.dev/vuln/GO-2023-1987
GO-2023-1987 - Go PackagesPatch;Vendor Advisory
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https://security.gentoo.org/glsa/202311-09
Go: Multiple Vulnerabilities (GLSA 202311-09) — Gentoo security
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https://security.netapp.com/advisory/ntap-20230831-0010/
CVE-2023-29409 Golang Vulnerability in NetApp Products | NetApp Product Security
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