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Debian DLA-1726-1 : bash security update

high Nessus Plugin ID 123093

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Synopsis

The remote Debian host is missing a security update.

Description

Two issues have been fixed in bash, the GNU Bourne-Again Shell :

CVE-2016-9401

The popd builtin segfaulted when called with negative out of range offsets.

CVE-2019-9924

Sylvain Beucler discovered that it was possible to call commands that contained a slash when in restricted mode (rbash) by adding them to the BASH_CMDS array.

For Debian 8 'Jessie', these problems have been fixed in version 4.3-11+deb8u2.

We recommend that you upgrade your bash 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/2019/03/msg00028.html

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

Plugin Details

Severity: High

ID: 123093

File Name: debian_DLA-1726.nasl

Version: 1.6

Type: local

Agent: unix

Published: 3/26/2019

Updated: 6/12/2024

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: 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-2019-9924

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:bash-static, p-cpe:/a:debian:debian_linux:bash-builtins, p-cpe:/a:debian:debian_linux:bash-doc, cpe:/o:debian:debian_linux:8.0, p-cpe:/a:debian:debian_linux:bash

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

Exploit Ease: No known exploits are available

Patch Publication Date: 3/25/2019

Vulnerability Publication Date: 1/23/2017

Reference Information

CVE: CVE-2016-9401, CVE-2019-9924