Red Hat Enterprise Linux 8 update for zsh



Published: 2022-05-11
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-45444
CWE-ID CWE-78
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe
Red Hat Enterprise Linux for ARM 64
Operating systems & Components / Operating system

Red Hat Enterprise Linux for Power, little endian
Operating systems & Components / Operating system

Red Hat Enterprise Linux for IBM z Systems
Operating systems & Components / Operating system

Red Hat Enterprise Linux for x86_64
Operating systems & Components / Operating system

zsh (Red Hat package)
Operating systems & Components / Operating system package or component

Vendor Red Hat Inc.

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) OS Command Injection

EUVDB-ID: #VU60674

Risk: High

CVSSv3.1:

CVE-ID: CVE-2021-45444

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to recursive PROMPT_SUBST expansion when processing malicious output. A remote attacker with ability to control the output can inject and execute arbitrary commands on the system with privileges on the current user.


Mitigation

Install updates from vendor's website.

Vulnerable software versions

Red Hat Enterprise Linux for ARM 64: 8

Red Hat Enterprise Linux for Power, little endian: 8

Red Hat Enterprise Linux for IBM z Systems: 8

Red Hat Enterprise Linux for x86_64: 8.0

zsh (Red Hat package): before 5.5.1-9.el8


CPE2.3 External links

http://access.redhat.com/errata/RHSA-2022:2120

Q & A

Can this vulnerability be exploited remotely?

Is there known malware, which exploits this vulnerability?



###SIDEBAR###