What’s Vulnerable › Vulnerabilities

CVE-2024-24783: Verify panics on certificates with an unknown public key algorithm in crypto/x509

• Severity: medium (CVSS 5.9 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-03-05 · updated 2026-06-17
• Weakness: CWE-476

Description

Verifying a certificate chain which contains a certificate with an unknown public key algorithm will cause Certificate.Verify to panic. This affects all crypto/tls clients, and servers that set Config.ClientAuth to VerifyClientCertIfGiven or RequireAndVerifyClientCert. The default behavior is for TLS servers to not verify client certificates.

Affected products

• Go standard library crypto/x509: before 1.21.8; from 1.22.0-0 before 1.22.1 — fixed in 1.21.8, 1.22.1

How to fix

Upgrade to a fixed version: Go standard library crypto/x509 1.21.8, 1.22.1. Check the vendor advisory for mitigations.

References

• http://www.openwall.com/lists/oss-security/2024/03/08/4
• https://go.dev/cl/569339
• https://go.dev/issue/65390
• https://groups.google.com/g/golang-announce/c/5pwGVUPoMbg
• https://pkg.go.dev/vuln/GO-2024-2598
• https://security.netapp.com/advisory/ntap-20240329-0005/
• http://www.openwall.com/lists/oss-security/2024/03/08/4
• https://go.dev/cl/569339
• https://go.dev/issue/65390
• https://groups.google.com/g/golang-announce/c/5pwGVUPoMbg
• https://pkg.go.dev/vuln/GO-2024-2598
• https://security.netapp.com/advisory/ntap-20240329-0005/

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