Lucene search

[email protected]NVD:CVE-2021-45444

HistoryFeb 14, 2022 - 12:15 p.m.

CVE-2021-45444

2022-02-1412:15:15

[email protected]

web.nvd.nist.gov

zsh

code execution

vulnerability

prompt_subst

recursive expansion

CVSS2

5.1

Attack Vector

NETWORK

Attack Complexity

HIGH

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:H/Au:N/C:P/I:P/A:P

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS

0.001

Percentile

47.1%

JSON

In zsh before 5.8.1, an attacker can achieve code execution if they control a command output inside the prompt, as demonstrated by a %F argument. This occurs because of recursive PROMPT_SUBST expansion.

Affected configurations

Nvd

Node

zshzshRange<5.8.1

Node

fedoraprojectfedoraMatch34

fedoraprojectfedoraMatch35

Node

debiandebian_linuxMatch9.0

debiandebian_linuxMatch10.0

debiandebian_linuxMatch11.0

Node

applemac_os_xRange10.15–10.15.7

applemac_os_xMatch10.15.7security_update_2020

applemac_os_xMatch10.15.7security_update_2020-001

applemac_os_xMatch10.15.7security_update_2020-005

applemac_os_xMatch10.15.7security_update_2020-007

applemac_os_xMatch10.15.7security_update_2021-001

applemac_os_xMatch10.15.7security_update_2021-002

applemac_os_xMatch10.15.7security_update_2021-003

applemac_os_xMatch10.15.7security_update_2021-006

applemac_os_xMatch10.15.7security_update_2021-007

applemac_os_xMatch10.15.7security_update_2021-008

applemac_os_xMatch10.15.7security_update_2022-001

applemac_os_xMatch10.15.7security_update_2022-002

applemac_os_xMatch10.15.7security_update_2022-003

applemacosRange11.0–11.6.6

applemacosRange12.0.0–12.4

VendorProductVersionCPE
zshzsh*cpe:2.3:a:zsh:zsh:*:*:*:*:*:*:*:*
fedoraprojectfedora34cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
fedoraprojectfedora35cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
debiandebian_linux9.0cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
debiandebian_linux10.0cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
debiandebian_linux11.0cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
applemac_os_x*cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
applemac_os_x10.15.7cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020:*:*:*:*:*:*
applemac_os_x10.15.7cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:*
applemac_os_x10.15.7cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-005:*:*:*:*:*:*

Vendor	Product	Version	CPE
zsh	zsh	*	cpe:2.3:a:zsh:zsh::::::::
fedoraproject	fedora	34	cpe:2.3:o:fedoraproject:fedora:34:::::::*
fedoraproject	fedora	35	cpe:2.3:o:fedoraproject:fedora:35:::::::*
debian	debian_linux	9.0	cpe:2.3:o:debian:debian_linux:9.0:::::::*
debian	debian_linux	10.0	cpe:2.3:o:debian:debian_linux:10.0:::::::*
debian	debian_linux	11.0	cpe:2.3:o:debian:debian_linux:11.0:::::::*
apple	mac_os_x	*	cpe:2.3:o:apple:mac_os_x::::::::
apple	mac_os_x	10.15.7	cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020::::::
apple	mac_os_x	10.15.7	cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001::::::
apple	mac_os_x	10.15.7	cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-005::::::