#VU69128 Server-Side Request Forgery (SSRF) in Varnish Cache and Varnish Enterprise - CVE-2022-45060
Published: November 8, 2022 / Updated: November 28, 2022
Vulnerability identifier: #VU69128
Vulnerability risk: Medium
CVSSv4.0: 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
CVE-ID: CVE-2022-45060
CWE-ID: CWE-918
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Varnish Cache
Varnish Enterprise
Varnish Cache
Varnish Enterprise
Software vendor:
Varnish Software
Varnish Software
Description
The disclosed vulnerability allows a remote attacker to perform SSRF attacks.
The vulnerability exists due to insufficient validation of user-supplied input when handling HTTP/2 requests. A remote attacker can introduce characters through the HTTP/2 pseudo-headers that are invalid in the context of an HTTP/1 request line, causing the Varnish server to produce invalid HTTP/1 requests to the backend.
Remediation
Install updates from vendor's website.