Ubuntu 16.04 LTS : Bash vulnerability (USN-4058-1)

High Nessus Plugin ID 126748

Synopsis

The remote Ubuntu host is missing a security-related patch.

Description

It was discovered that Bash incorrectly handled the restricted shell.
An attacker could possibly use this issue to escape restrictions and execute any command.

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected bash package.

See Also

https://usn.ubuntu.com/4058-1/

Plugin Details

Severity: High

ID: 126748

File Name: ubuntu_USN-4058-1.nasl

Version: 1.4

Type: local

Agent: unix

Published: 2019/07/16

Updated: 2020/09/17

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.2

Temporal Score: 5.3

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

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:canonical:ubuntu_linux:bash, cpe:/o:canonical:ubuntu_linux:16.04

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2019/07/15

Vulnerability Publication Date: 2019/03/22

Reference Information

CVE: CVE-2019-9924

USN: 4058-1