Debian DLA-3208-1 : varnish - LTS security update

high Nessus Plugin ID 168207

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Synopsis

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

Description

The remote Debian 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-3208 advisory.

- An issue was discovered in Varnish Cache before 6.0.6 LTS, 6.1.x and 6.2.x before 6.2.3, and 6.3.x before 6.3.2. It occurs when communication with a TLS termination proxy uses PROXY version 2. There can be an assertion failure and daemon restart, which causes a performance loss. (CVE-2020-11653)

- An HTTP Request Forgery issue was discovered in Varnish Cache 5.x and 6.x before 6.0.11, 7.x before 7.1.2, and 7.2.x before 7.2.1. An attacker may introduce characters through 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 could, in turn, be used to exploit vulnerabilities in a server behind the Varnish server. Note: the 6.0.x LTS series (before 6.0.11) is affected. (CVE-2022-45060)

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

Solution

Upgrade the varnish packages.

For Debian 10 buster, these problems have been fixed in version 6.1.1-1+deb10u4.

Plugin Details

Severity: High

ID: 168207

File Name: debian_DLA-3208.nasl

Version: 1.2

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 11/27/2022

Updated: 11/27/2022

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2020-11653

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

CVSS Score Source: CVE-2022-45060

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:libvarnishapi-dev, p-cpe:/a:debian:debian_linux:libvarnishapi2, p-cpe:/a:debian:debian_linux:varnish, p-cpe:/a:debian:debian_linux:varnish-doc, cpe:/o:debian:debian_linux:10.0

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/27/2022

Vulnerability Publication Date: 4/8/2020

Reference Information

CVE: CVE-2020-11653, CVE-2022-45060

Detections

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