Squid 3.1.12.2 <= 3.1.x <= 3.1.23 / 3.2.0.8 <= 3.2.x <= 3.2.14 / 3.3.x / 3.4.x / 3.5.x <= 3.5.27 / 4.x < 4.0.13 Denial of Service Vulnerability (SQUID-2018:3)

medium Nessus Plugin ID 119725

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Synopsis

The remote proxy server is affected by a denial of service vulnerability.

Description

According to its banner, the version of Squid running on the remote host is 3.1.x after or equal to 3.1.12.2 and prior or equal to 3.1.23, 3.2.x after or equal to 3.2.0.8 and prior or equal to 3.2.0.8, 3.3.x, 3.4.x, 3.5.x prior or equal to 3.5.27, or 4.x prior to 4.0.13. It is, therefore, affected by a denial of service (DoS) vulnerability in the ESI response processing component due to incorrect pointer handling. A remote attacker controlled server can exploit this issue, via a crafted ESI response, to cause a denial of service for all clients accessing the Squid service.

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

Solution

Upgrade to Squid version 4.0.13 or later. Alternatively, apply the vendor-supplied patch.

Plugin Details

Severity: Medium

ID: 119725

File Name: squid_2018_3.nasl

Version: 1.2

Type: remote

Family: Firewalls

Published: 12/17/2018

Updated: 10/31/2019

Configuration: Enable paranoid mode

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2018-1172

CVSS v3

Risk Factor: Medium

Base Score: 5.9

Temporal Score: 5.2

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

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

Vulnerability Information

CPE: cpe:/a:squid-cache:squid

Required KB Items: installed_sw/Squid, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 4/16/2016

Vulnerability Publication Date: 4/18/2018

Reference Information

CVE: CVE-2018-1172

Detections

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