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Debian DLA-970-1 : sudo security update

medium Nessus Plugin ID 100519

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Synopsis

The remote Debian host is missing a security update.

Description

The Qualys Security team discovered that sudo, a program designed to provide limited super user privileges to specific users, does not properly parse '/proc/[pid]/stat' to read the device number of the tty from field 7 (tty_nr). A sudoers user can take advantage of this flaw on an SELinux-enabled system to obtain full root privileges.

For Debian 7 'Wheezy', this problem has been fixed in version 1.8.5p2-1+nmu3+deb7u3.

For Debian 8 'Jessie', this problem has been fixed in version 1.8.10p3-1+deb8u4.

We recommend that you upgrade your sudo packages.

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/2017/05/msg00039.html

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

Plugin Details

Severity: Medium

ID: 100519

File Name: debian_DLA-970.nasl

Version: 3.13

Type: local

Agent: unix

Published: 5/31/2017

Updated: 1/11/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.4

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

CVSS v3

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5.8

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

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

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:sudo-ldap, cpe:/o:debian:debian_linux:7.0, 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: 5/30/2017

Reference Information

CVE: CVE-2017-1000367