Advisories for Golang/Github.com/Cert-Manager/Cert-Manager package

Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-r4pg-vg54-wxx4. This link is maintained to preserve external references. Original 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 …

cert-manager packages which call the standard library pem.Decode() function can take a long time to process specially crafted invalid PEM data. If an attacker is able to modify PEM data which cert-manager reads (e.g. in a Secret resource), they may be able to use large amounts of CPU in the cert-manager controller pod to effectively create a denial-of-service (DoS) vector for cert-manager in the cluster. Secrets are limited in size …