SB2022092138 - SSRF in Kubernetes kube-apiserver

Description

This security bulletin contains information about 1 vulnerability.

1) Server-Side Request Forgery (SSRF) (CVE-ID: CVE-2022-3172)

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:N/SA:N/E:U/U:Green

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input in kube-apiserver. A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.

Remediation

Install update from vendor's website.

References

• https://github.com/kubernetes/kubernetes/issues/112513
• https://seclists.org/oss-sec/2022/q3/207