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FreeBSD : Vinyl/Varnish -- HTTP/2 parsing deficiency (f0f4bb64-52c6-11f1-a1c0-0050569f0b83)

high Nessus Plugin ID 315242

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 f0f4bb64-52c6-11f1-a1c0-0050569f0b83 advisory.

 Vinyl Development Team reports:
 A deficiency in HTTP/2 request parsing can be exploited to launch a backend request desync attack (request smuggling), which in turn can be used for cache poisoning, authentication bypass or possibly even information disclosure and manipulation.

Tenable has extracted the preceding description block directly from the FreeBSD security advisory.

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://vinyl-cache.org/security/VSV00019.html

http://www.nessus.org/u?bed7728e

Plugin Details

Severity: High

ID: 315242

File Name: freebsd_pkg_f0f4bb6452c611f1a1c00050569f0b83.nasl

Version: 1.1

Type: Local

Published: 5/19/2026

Updated: 5/19/2026

Supported Sensors: Nessus

Vulnerability Information

CPE: cpe:/o:freebsd:freebsd, p-cpe:/a:freebsd:freebsd:varnish7, p-cpe:/a:freebsd:freebsd:vinyl09

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/18/2026

Vulnerability Publication Date: 5/18/2026