Resource exhaustion in Knative Serving
CVE-2023-48713
Knative Serving builds on Kubernetes to support deploying and serving of applications and functions as serverless containers. An attacker who controls a pod to a degree where they can control the responses from the /metrics endpoint can cause Denial-of-Service of the autoscaler from an unbound memory allocation bug. This is a DoS vulnerability, where a non-privileged Knative user can cause a DoS for the cluster. This issue has been patched in version 0.39.0.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.009 (57.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
- Knative Serving — versions < 0.39.0
Weakness classification (CWE)
References
- github.com/knative/serving/security/advisories/GHSA-qmvj-4qr9-v547 (Third Party Advisory)
- github.com/knative/serving/commit/012ee2509231b80b7842139bfabc30516d3026ca (Patch)
- github.com/knative/serving/commit/101f814112b9ca0767f457e7e616b46205551cf1 (Patch)
- github.com/knative/serving/commit/fff40ef7bac9be8380ec3d1c70fc15b57093382a (Patch)
Frequently asked questions
- What is CVE-2023-48713?
- CVE-2023-48713 is a medium-severity vulnerability in Knative Serving, classified under Uncontrolled Resource Consumption. CVSS score: 6.5/10. Published 2023-11-28.
- How severe is CVE-2023-48713?
- Medium severity. CVSS v3 base score is 6.5 out of 10.