RHEL 8 : squid:4 (RHSA-2022:1939)

medium Nessus Plugin ID 161029

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Synopsis

The remote Red Hat host is missing a security update for squid:4.

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2022:1939 advisory.

Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.

Security Fix(es):

* squid: out-of-bounds read in WCCP protocol data may lead to information disclosure (CVE-2021-28116)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.6 Release Notes linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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

Solution

Update the RHEL squid:4 package based on the guidance in RHSA-2022:1939.

Plugin Details

Severity: Medium

ID: 161029

File Name: redhat-RHSA-2022-1939.nasl

Version: 1.10

Type: Local

Agent: unix

Family: Red Hat Local Security Checks

Published: 5/11/2022

Updated: 4/8/2025

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.2

Percentile: 0.01

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Medium

Base Score: 4.3

Temporal Score: 3.2

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

CVSS Score Source: CVE-2021-28116

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:libecap-devel, p-cpe:/a:redhat:enterprise_linux:squid, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:redhat:enterprise_linux:libecap

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

Exploit Ease: No known exploits are available

Patch Publication Date: 5/10/2022

Vulnerability Publication Date: 3/9/2021

Reference Information

CVE: CVE-2021-28116

CWE: 200

RHSA: 2022:1939

Detections

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