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Debian DLA-2117-1 : zsh security update

high Nessus Plugin ID 134241

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Synopsis

The remote Debian host is missing a security update.

Description

A privilege escalation vulnerability was discovered in zsh, a shell with lots of features, whereby a user could regain a formerly elevated privelege level even when such an action should not be permitted.

For Debian 8 'Jessie', this problem has been fixed in version 5.0.7-5+deb8u1.

We recommend that you upgrade your zsh 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 packages.

See Also

https://lists.debian.org/debian-lts-announce/2020/03/msg00004.html

https://packages.debian.org/source/jessie/zsh

Plugin Details

Severity: High

ID: 134241

File Name: debian_DLA-2117.nasl

Version: 1.5

Type: local

Agent: unix

Published: 3/6/2020

Updated: 3/25/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

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

CVSS Score Source: CVE-2019-20044

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

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:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:debian:debian_linux:zsh-beta, p-cpe:/a:debian:debian_linux:zsh-static, p-cpe:/a:debian:debian_linux:zsh-dbg, p-cpe:/a:debian:debian_linux:zsh, p-cpe:/a:debian:debian_linux:zsh-doc, p-cpe:/a:debian:debian_linux:zsh-beta-doc, cpe:/o:debian:debian_linux:8.0, p-cpe:/a:debian:debian_linux:zsh-dev, p-cpe:/a:debian:debian_linux:zsh-common

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

Exploit Ease: No known exploits are available

Patch Publication Date: 3/2/2020

Vulnerability Publication Date: 2/24/2020

Reference Information

CVE: CVE-2019-20044