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Fedora 36 : varnish (2022-babfbc2622)

high Nessus Plugin ID 169045

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Synopsis

The remote Fedora host is missing one or more security updates.

Description

The remote Fedora 36 host has a package installed that is affected by multiple vulnerabilities as referenced in the FEDORA-2022-babfbc2622 advisory.

 This release includes fix for CVE-2022-45059 (VSV00010) and CVE-2022-45060 (VSV00011). From the upstream release notes:

 VSV00010 Varnish Request Smuggling Vulnerability

 Date: 2022-11-08

 A request smuggling attack can be performed on Varnish Cache servers by requesting that certain headers are made hop-by-hop, preventing the Varnish Cache servers from forwarding critical headers to the backend.
 Among the headers that can be filtered this way are both Content-Length and Host, making it possible for an attacker to both break the HTTP/1 protocol framing, and bypass request to host routing in VCL.

 VSV00011 Varnish HTTP/2 Request Forgery Vulnerability

 Date: 2022-11-08

 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.


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

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

Solution

Update the affected varnish package.

See Also

https://bodhi.fedoraproject.org/updates/FEDORA-2022-babfbc2622

Plugin Details

Severity: High

ID: 169045

File Name: fedora_2022-babfbc2622.nasl

Version: 1.1

Type: local

Agent: unix

Published: 12/22/2022

Updated: 11/14/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:C/A:N

CVSS Score Source: CVE-2022-45060

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:fedoraproject:fedora:varnish, cpe:/o:fedoraproject:fedora:36

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 11/14/2022

Vulnerability Publication Date: 11/9/2022

Reference Information

CVE: CVE-2022-45059, CVE-2022-45060