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Ubuntu 20.04 LTS : Squid vulnerabilities (USN-4477-1)

medium Nessus Plugin ID 140031

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Synopsis

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

Description

Amit Klein discovered that Squid incorrectly validated certain data. A remote attacker could possibly use this issue to perform an HTTP request smuggling attack, resulting in cache poisoning.
(CVE-2020-15810) Regis Leroy discovered that Squid incorrectly validated certain data. A remote attacker could possibly use this issue to perform an HTTP request splitting attack, resulting in cache poisoning. (CVE-2020-15811) Lubos Uhliarik discovered that Squid incorrectly handled certain Cache Digest response messages sent by trusted peers. A remote attacker could possibly use this issue to cause Squid to consume resources, resulting in a denial of service.
(CVE-2020-24606).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected packages.

See Also

https://ubuntu.com/security/notices/USN-4477-1

Plugin Details

Severity: Medium

ID: 140031

File Name: ubuntu_USN-4477-1.nasl

Version: 1.9

Type: local

Agent: unix

Published: 8/28/2020

Updated: 10/23/2023

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: Medium

Base Score: 4

Temporal Score: 3

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

CVSS Score Source: CVE-2020-15811

CVSS v3

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 5.7

Vector: CVSS:3.0/AV:N/AC:L/PR:L/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:canonical:ubuntu_linux:squid, p-cpe:/a:canonical:ubuntu_linux:squid-cgi, p-cpe:/a:canonical:ubuntu_linux:squid-common, p-cpe:/a:canonical:ubuntu_linux:squid-purge, p-cpe:/a:canonical:ubuntu_linux:squidclient, cpe:/o:canonical:ubuntu_linux:20.04:-:lts

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

Exploit Ease: No known exploits are available

Patch Publication Date: 8/27/2020

Vulnerability Publication Date: 8/24/2020

Reference Information

CVE: CVE-2020-15810, CVE-2020-15811, CVE-2020-24606

IAVB: 2020-B-0050-S

USN: 4477-1