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Debian DLA-2534-1 : sudo security update

high Nessus Plugin ID 145475

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Synopsis

The remote Debian host is missing a security 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.

For Debian 9 stretch, this problem has been fixed in version 1.8.19p1-2.1+deb9u3.

We recommend that you upgrade your sudo packages.

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

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 sudo, and sudo-ldap packages.

See Also

https://lists.debian.org/debian-lts-announce/2021/01/msg00022.html

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

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

Plugin Details

Severity: High

ID: 145475

File Name: debian_DLA-2534.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, Continuous 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-ldap, cpe:/o:debian:debian_linux:9.0, p-cpe:/a:debian:debian_linux:sudo

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

IAVA: 2021-A-0053