Squid 3.2.0.10 <= 3.2.x / 3.3.x / 3.4.x / 3.5.x <= 3.5.28 / 4.x < 4.4 Denial of Service Vulnerability (SQUID-2018:5)

medium Nessus Plugin ID 119727

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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 3.2.x after or equal to 3.2.0.10, 3.3.x, 3.4.x, 3.5.x prior or equal to 3.5.28, or 4.x prior to 4.4. It is, therefore, affected by a denial of service (DoS) vulnerability in the SNMP component due to a memory leak in SNMP query rejection code. An unauthenticated, remote attacker can exploit this issue to consume all memory available to the Squid process, causing it to crash.

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 4.4 or later. Alternatively, apply the vendor-supplied patch.

Plugin Details

Severity: Medium

ID: 119727

File Name: squid_2018_5.nasl

Version: 1.4

Type: remote

Family: Firewalls

Published: 12/17/2018

Updated: 3/21/2025

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-2018-19132

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: Settings/ParanoidReport, installed_sw/Squid

Exploit Ease: No known exploits are available

Patch Publication Date: 10/23/2016

Vulnerability Publication Date: 10/28/2018

Reference Information

CVE: CVE-2018-19132

Detections

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