The Helm core maintainers have identified a high severity security vulnerability in Go's crypto package affecting all versions prior to Helm 2.16.8 and Helm 3.1.0.

Thanks to @ravin9249 for identifying the vulnerability.

Impact

Go before 1.12.16 and 1.13.x before 1.13.7 (and the crypto/cryptobyte package before 0.0.0-20200124225646-8b5121be2f68 for Go) allows attacks on clients resulting in a panic via a malformed X.509 certificate. This may allow a remote attacker to cause a denial of service.

Patches

A patch to compile Helm against Go 1.14.4 has been provided for Helm 2 and is available in Helm 2.16.8. Helm 3.1.0 and newer are compiled against Go 1.13.7+.

Workarounds

No workaround is available. Users are urged to upgrade.

References

• https://nvd.nist.gov/vuln/detail/CVE-2020-7919
• helm/helm#8288

For more information

If you have any questions or comments about this advisory:

• Open an issue in the Helm repository
• For security-specific issues, email us at cncf-helm-security@lists.cncf.io

References

• GHSA-cjjc-xp8v-855w
• https://nvd.nist.gov/vuln/detail/CVE-2020-7919
• https://groups.google.com/forum/#!forum/golang-announce
• https://groups.google.com/forum/#!topic/golang-announce/-sdUB4VEQkA
• https://groups.google.com/forum/#!topic/golang-announce/Hsw4mHYc470
• https://www.debian.org/security/2021/dsa-4848
• https://www.oracle.com/security-alerts/cpuApr2021.html
• https://go.dev/cl/216677
• https://go.dev/cl/216680
• https://go.dev/issue/36837
• https://go.googlesource.com/go/+/b13ce14c4a6aa59b7b041ad2b6eed2d23e15b574
• https://groups.google.com/g/golang-announce/c/Hsw4mHYc470
• https://pkg.go.dev/vuln/GO-2022-0229
• https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/S43VLYRURELDWX4D5RFOYBNFGO6CGBBC
• https://security.netapp.com/advisory/ntap-20200327-0001