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Ubuntu 16.04 LTS / 18.04 LTS : Squid vulnerabilities (USN-4213-1)

critical Nessus Plugin ID 131723

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Synopsis

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

Description

The remote Ubuntu 16.04 LTS / 18.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-4213-1 advisory.

 Jeriko One and Kristoffer Danielsson discovered that Squid incorrectly handled certain URN requests. A remote attacker could possibly use this issue to bypass access checks and access restricted servers. This issue was only addressed in Ubuntu 19.04 and Ubuntu 19.10. (CVE-2019-12523)

 Jeriko One discovered that Squid incorrectly handed URN responses. A remote attacker could use this issue to cause Squid to crash, resulting in a denial of service, or possibly execute arbitrary code.
 (CVE-2019-12526)

 Alex Rousskov discovered that Squid incorrectly handled certain strings. A remote attacker could possibly use this issue to cause Squid to crash, resulting in a denial of service. This issue only affected Ubuntu 19.04. (CVE-2019-12854)

 Jeriko One and Kristoffer Danielsson discovered that Squid incorrectly handled certain input. A remote attacker could use this issue to cause Squid to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue was only addressed in Ubuntu 19.04 and Ubuntu 19.10. (CVE-2019-18676)

 Kristoffer Danielsson discovered that Squid incorrectly handled certain messages. This issue could result in traffic being redirected to origins it should not be delivered to. (CVE-2019-18677)

 Rgis Leroy discovered that Squid incorrectly handled certain HTTP request headers. A remote attacker could use this to smuggle HTTP requests and corrupt caches with arbitrary content. (CVE-2019-18678)

 David Fifield discovered that Squid incorrectly handled HTTP Digest Authentication. A remote attacker could possibly use this issue to obtain pointer contents and bypass ASLR protections. (CVE-2019-18679)

Tenable has extracted the preceding description block directly from the Ubuntu 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 packages.

See Also

https://ubuntu.com/security/notices/USN-4213-1

Plugin Details

Severity: Critical

ID: 131723

File Name: ubuntu_USN-4213-1.nasl

Version: 1.8

Type: local

Agent: unix

Published: 12/5/2019

Updated: 8/27/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

CVSS Score Source: CVE-2019-12526

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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

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

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:16.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:squid-common, p-cpe:/a:canonical:ubuntu_linux:squid-cgi, p-cpe:/a:canonical:ubuntu_linux:squid, p-cpe:/a:canonical:ubuntu_linux:squid-purge, p-cpe:/a:canonical:ubuntu_linux:squidclient, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:squid3

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/4/2019

Vulnerability Publication Date: 8/15/2019

Reference Information

CVE: CVE-2019-12523, CVE-2019-12526, CVE-2019-12854, CVE-2019-18676, CVE-2019-18677, CVE-2019-18678, CVE-2019-18679

USN: 4213-1