Debian DLA-2920-1 : varnish - LTS security update

critical Nessus Plugin ID 158035

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Synopsis

The remote Debian host is missing a security-related update.

Description

The remote Debian 9 host has packages installed that are affected by a vulnerability as referenced in the dla-2920 advisory.

James Kettle discovered that a request smuggling attack can be performed on HTTP/1 connections on Varnish servers, high-performance web accelerators. The smuggled request would be treated as an additional request by the Varnish server which may lead to information disclosure and cache poisoning. For Debian 9 stretch, this problem has been fixed in version 5.0.0-7+deb9u3. We recommend that you upgrade your varnish packages. For the detailed security status of varnish please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/varnish Further information about Debian LTS security advisories, how to apply these updates to your system and frequently asked questions can be found at:
https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian 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

Upgrade the varnish packages.

For Debian 9 stretch, this problem has been fixed in version 5.0.0-7+deb9u3.

Plugin Details

Severity: Critical

ID: 158035

File Name: debian_DLA-2920.nasl

Version: 1.3

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 2/14/2022

Updated: 1/24/2025

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.2

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 4.7

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

CVSS Score Source: CVE-2022-23959

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:varnish, p-cpe:/a:debian:debian_linux:libvarnishapi-dev, cpe:/o:debian:debian_linux:9.0, p-cpe:/a:debian:debian_linux:libvarnishapi1, p-cpe:/a:debian:debian_linux:varnish-doc

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 2/14/2022

Vulnerability Publication Date: 1/26/2022

Reference Information

CVE: CVE-2022-23959

Detections

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