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)

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: 1.0

Type: local

Agent: unix

Family: Amazon Linux Local Security Checks

Published: 5/4/2023

Updated: 5/4/2023

Supported Sensors: Agentless 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: p-cpe:/a:amazon:linux:privoxy-debuginfo, cpe:/o:amazon:linux, p-cpe:/a:amazon:linux:privoxy

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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