Debian DLA-2587-1 : privoxy security update

high Nessus Plugin ID 147548

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Synopsis

The remote Debian host is missing a security update.

Description

Multiple vulnerabilites were discovered in privoxy, a web proxy with advanced filtering capabilities.

CVE-2021-20272

An assertion failure could be triggered with a crafted CGI request leading to server crash.

CVE-2021-20273

A crash can occur via a crafted CGI request if Privoxy is toggled off.

CVE-2021-20275

An invalid read of size two may occur in chunked_body_is_complete() leading to denial of service.

CVE-2021-20276

Invalid memory access with an invalid pattern passed to pcre_compile() may lead to denial of service.

For Debian 9 stretch, these problems have been fixed in version 3.0.26-3+deb9u2.

We recommend that you upgrade your privoxy packages.

For the detailed security status of privoxy please refer to its security tracker page at:
https://security-tracker.debian.org/tracker/privoxy

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Upgrade the affected privoxy package.

Plugin Details

Severity: High

ID: 147548

File Name: debian_DLA-2587.nasl

Version: 1.3

Type: local

Agent: unix

Family: Debian Local Security Checks

Published: 3/10/2021

Updated: 3/12/2021

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, 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-2021-20276

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:debian:debian_linux:privoxy, cpe:/o:debian:debian_linux:9.0

Required KB Items: Host/local_checks_enabled, Host/Debian/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 3/9/2021

Vulnerability Publication Date: 3/9/2021

Reference Information

CVE: CVE-2021-20272, CVE-2021-20273, CVE-2021-20275, CVE-2021-20276

Detections

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