CentOS 8 : varnish:6 (CESA-2020:4756)

high Nessus Plugin ID 145911

Synopsis

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

Description

The remote CentOS Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2020:4756 advisory.

- varnish: denial of service handling certain crafted HTTP/1 requests (CVE-2019-15892)

- varnish: not clearing pointer between two client requests leads to information disclosure (CVE-2019-20637)

- varnish: remote clients may cause Varnish to assert and restart which could result in DoS (CVE-2020-11653)

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 packages.

See Also

https://access.redhat.com/errata/RHSA-2020:4756

Plugin Details

Severity: High

ID: 145911

File Name: centos8_RHSA-2020-4756.nasl

Version: 1.5

Type: local

Agent: unix

Published: 2/1/2021

Updated: 2/8/2023

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2019-20637

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:H/I:N/A:N

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

Vulnerability Information

CPE: cpe:/o:centos:centos:8, p-cpe:/a:centos:centos:varnish, p-cpe:/a:centos:centos:varnish-devel, p-cpe:/a:centos:centos:varnish-docs, p-cpe:/a:centos:centos:varnish-modules

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

Exploit Ease: No known exploits are available

Patch Publication Date: 11/4/2020

Vulnerability Publication Date: 9/3/2019

Reference Information

CVE: CVE-2019-15892, CVE-2019-20637, CVE-2020-11653

RHSA: 2020:4756