CVE-2022-3172
Published: 03 November 2023
Summary
CVE-2022-3172 is a medium-severity SSRF (CWE-918) vulnerability in Kubernetes Apiserver. Its CVSS base score is 5.1 (Medium).
Operationally, ranked in the top 12.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
A security issue was discovered in kube-apiserver that allows an aggregated API server to redirect client traffic to any URL. This could lead to the client performing unexpected actions as well as forwarding the client's API server credentials to third parties. The vulnerability affects the Kubernetes kube-apiserver component and is tracked as CWE-918 with a CVSS 3.1 score of 5.1.
An attacker who controls or can influence an aggregated API server reachable over the network can exploit the flaw. Successful exploitation requires high privileges and user interaction, after which the attacker can cause the kube-apiserver client to issue requests to arbitrary destinations and leak its credentials.
References published by the Kubernetes project and NetApp point to mitigation guidance and patch information for affected deployments. The EPSS score rose from lower values to a peak of 0.0536, indicating increased exploitation interest after disclosure before receding to the current level of 0.0341.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2022-42593
Vulnerability details
A security issue was discovered in kube-apiserver that allows an aggregated API server to redirect client traffic to any URL. This could lead to the client performing unexpected actions as well as forwarding the client's API server credentials to third…
more
parties.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing attempts server-side requests to internal resources, identifying SSRF weaknesses for remediation.
Outbound connections to external resources can be monitored and limited at the boundary, reducing SSRF impact.
Validates server-side URLs and resource references to block SSRF attempts.
Detects server-side request forgery through monitoring of unexpected outbound connections.