Amazon Linux AMI : privoxy (ALAS-2023-1739)

high Nessus Plugin ID 175092

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Synopsis

The remote Amazon Linux AMI host is missing a security update.

Description

The version of privoxy installed on the remote host is prior to 3.0.23-2.17. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS-2023-1739 advisory.

A flaw was found in privoxy before 3.0.32. A invalid read of size two may occur in chunked_body_is_complete() leading to denial of service. (CVE-2021-20275)

A vulnerability was found in Privoxy which was fixed in get_url_spec_param() by freeing memory of compiled pattern spec before bailing. (CVE-2021-44540)

A memory leak vulnerability was found in Privoxy when handling errors. (CVE-2021-44542)

Tenable has extracted the preceding description block directly from the tested product 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

Run 'yum update privoxy' to update your system.

Plugin Details

Severity: High

ID: 175092

File Name: ala_ALAS-2023-1739.nasl

Version: 1.1

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 5/4/2023

Updated: 12/11/2024

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2021-44542

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/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:/o:amazon:linux, p-cpe:/a:amazon:linux:privoxy, p-cpe:/a:amazon:linux:privoxy-debuginfo

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

Exploit Ease: No known exploits are available

Patch Publication Date: 4/27/2023

Vulnerability Publication Date: 3/9/2021

Reference Information

CVE: CVE-2021-20275, CVE-2021-44540, CVE-2021-44542

Detections

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