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FreeBSD : varnish -- HTTP/2 Request Forgery Vulnerability (5b8d8dee-6088-11ed-8c5e-641c67a117d8)

high Nessus Plugin ID 167245

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Synopsis

The remote FreeBSD host is missing one or more security-related updates.

Description

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 5b8d8dee-6088-11ed-8c5e-641c67a117d8 advisory.

 - Varnish Cache Project reports: A request forgery attack can be performed on Varnish Cache servers that have the HTTP/2 protocol turned on. An attacker may 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. This may in turn be used to successfully exploit vulnerabilities in a server behind the Varnish server.
 (5b8d8dee-6088-11ed-8c5e-641c67a117d8)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://varnish-cache.org/security/VSV00011.html

http://www.nessus.org/u?933d9eed

Plugin Details

Severity: High

ID: 167245

File Name: freebsd_pkg_5b8d8dee608811ed8c5e641c67a117d8.nasl

Version: 1.2

Type: local

Published: 11/10/2022

Updated: 11/10/2022

Supported Sensors: Nessus

Vulnerability Information

CPE: p-cpe:/a:freebsd:freebsd:varnish6, p-cpe:/a:freebsd:freebsd:varnish7, cpe:/o:freebsd:freebsd

Required KB Items: Host/local_checks_enabled, Host/FreeBSD/release, Host/FreeBSD/pkg_info

Exploit Ease: No known exploits are available

Patch Publication Date: 11/9/2022

Vulnerability Publication Date: 11/8/2022