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PRIOn knowledge basePRION:CVE-2023-29409

HistoryAug 02, 2023 - 8:15 p.m.

Code injection

2023-08-0220:15:00

PRIOn knowledge base

www.prio-n.com

certificate chains

cpu time

rsa keys

handshakes

test certificates

publicly trusted

private pkis

web pki

crypto/tls

nvd

6.3 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

31.3%

JSON

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.

CPENameOperatorVersion
goeq1.21.0 rc2
goeq1.21.0 rc3
goge1.20.0
golt1.20.7
golt1.19.12
goeq1.21.0 rc1

Name	Operator	Version
go	eq	1.21.0 rc2
go	eq	1.21.0 rc3
go	ge	1.20.0
go	lt	1.20.7
go	lt	1.19.12
go	eq	1.21.0 rc1

References

go.dev/cl/515257

go.dev/issue/61460

groups.google.com/g/golang-announce/c/X0b6CsSAaYI/m/Efv5DbZ9AwAJ

pkg.go.dev/vuln/GO-2023-1987

security.gentoo.org/glsa/202311-09

security.netapp.com/advisory/ntap-20230831-0010/