chore(deps): update module github.com/cert-manager/cert-manager to v1.16.2 [security] - autoclosed #57
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
….16.2 [security] Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
renovate
bot
changed the title
renovate
bot
deleted the
renovate/go-github.com-cert-manager-cert-manager-vulnerability
branch
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
This PR contains the following updates:
v1.16.1->v1.16.2Warning
Some dependencies could not be looked up. Check the warning logs for more information.
GitHub Vulnerability Alerts
GHSA-r4pg-vg54-wxx4
Impact
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 to 1MiB, which reduces the impact of this issue; it was discovered through an ~856kB fuzz test input which causes
pem.Decodeto take roughly 750ms to reject the input on an M2 Max Macbook Pro. By way of comparison, a valid PEM-encoded 4096-bit RSA key takes roughly 70µs to parse on the same machine.Given the required size of PEM data needed to present a realistic DoS vector, an attacker would need to create or insert many different large sized resources in the cluster, and so the best secondary defense is to ensure that sensible limits are placed via RBAC.
This issue affects all versions of cert-manager to have been released since at least v0.1.0 (since
pem.Decodeis core functionality for cert-manager). All supported releases are patched.Patches
The fixed versions are v1.16.2, v1.15.4 and v1.12.14.
Workarounds
Ensure that RBAC is scoped correctly in your cluster. If a user is able to modify resources containing PEM data to be able to exploit this, it's like that those permissions are a bigger security threat than this issue - especially for Secret resources.
References
Release Notes
cert-manager/cert-manager (github.com/cert-manager/cert-manager)
v1.16.2Compare Source
Configuration
📅 Schedule: Branch creation - "" (UTC), Automerge - At any time (no schedule defined).
🚦 Automerge: Enabled.
♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.
🔕 Ignore: Close this PR and you won't be reminded about this update again.
This PR was generated by Mend Renovate. View the repository job log.