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Debian DSA-4839-1 : sudo - security update

high Nessus Plugin ID 145471

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Synopsis

The remote Debian host is missing a security-related update.

Description

The Qualys Research Labs discovered a heap-based buffer overflow vulnerability in sudo, a program designed to provide limited super user privileges to specific users. Any local user (sudoers and non-sudoers) can exploit this flaw for root privilege escalation.

Solution

Upgrade the sudo packages.

For the stable distribution (buster), this problem has been fixed in version 1.8.27-1+deb10u3.

See Also

https://security-tracker.debian.org/tracker/source-package/sudo

https://packages.debian.org/source/buster/sudo

https://www.debian.org/security/2021/dsa-4839

Plugin Details

Severity: High

ID: 145471

File Name: debian_DSA-4839.nasl

Version: 1.10

Type: local

Agent: unix

Published: 1/27/2021

Updated: 1/12/2023

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

Risk Information

VPR

Risk Factor: Critical

Score: 9.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 6.3

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

CVSS Score Source: CVE-2021-3156

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 7.5

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:sudo, cpe:/o:debian:debian_linux:10.0

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 1/26/2021

Vulnerability Publication Date: 1/26/2021

CISA Known Exploited Vulnerability Due Dates: 4/27/2022

Exploitable With

CANVAS (CANVAS)

Core Impact

Metasploit (Sudo Heap-Based Buffer Overflow)

Reference Information

CVE: CVE-2021-3156

DSA: 4839

IAVA: 2021-A-0053