What’s Vulnerable › Vulnerabilities

CVE-2024-12401: Cert-manager: potential dos when parsing specially crafted pem inputs

• Severity: medium (CVSS 4.4 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: 2024-12-12 · updated 2026-06-26
• Weakness: CWE-20

Description

A flaw was found in the cert-manager package. This flaw allows an attacker who can modify PEM data that the cert-manager reads, for example, in a Secret resource, to use large amounts of CPU in the cert-manager controller pod to effectively create a denial-of-service (DoS) vector for the cert-manager in the cluster.

Affected products

• Red Hat Advanced Cluster Management for Kubernetes 2: all versions
• Red Hat cert-manager Operator for Red Hat OpenShift: all versions
• Red Hat Cryostat 3: all versions
• Red Hat OpenShift Container Platform 4.18: all versions
• Red Hat OpenShift Serverless: all versions
• Red Hat Connectivity Link 1: all versions
• Red Hat Openshift Data Foundation 4: all versions
• Red Hat OpenShift GitOps: all versions

References

• https://access.redhat.com/security/cve/CVE-2024-12401
• https://bugzilla.redhat.com/show_bug.cgi?id=2327929
• https://github.com/cert-manager/cert-manager/pull/7400
• https://github.com/cert-manager/cert-manager/pull/7401
• https://github.com/cert-manager/cert-manager/pull/7402
• https://github.com/cert-manager/cert-manager/pull/7403
• https://github.com/cert-manager/cert-manager/security/advisories/GHSA-r4pg-vg54-wxx4
• https://go.dev/issue/50116

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