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cveMitreCVE-2021-45444
HistoryFeb 14, 2022 - 12:15 p.m.

CVE-2021-45444

2022-02-1412:15:15
mitre
web.nvd.nist.gov
227
2
zsh security
code execution
prompt_subst
nvd
cve-2021-45444

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

AI Score

7.8

Confidence

High

EPSS

0.001

Percentile

44.2%

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
OR
fedoraprojectfedoraMatch35
Node
debiandebian_linuxMatch9.0
OR
debiandebian_linuxMatch10.0
OR
debiandebian_linuxMatch11.0
Node
applemac_os_xRange10.15–10.15.7
OR
applemac_os_xMatch10.15.7security_update_2020
OR
applemac_os_xMatch10.15.7security_update_2020-001
OR
applemac_os_xMatch10.15.7security_update_2020-005
OR
applemac_os_xMatch10.15.7security_update_2020-007
OR
applemac_os_xMatch10.15.7security_update_2021-001
OR
applemac_os_xMatch10.15.7security_update_2021-002
OR
applemac_os_xMatch10.15.7security_update_2021-003
OR
applemac_os_xMatch10.15.7security_update_2021-006
OR
applemac_os_xMatch10.15.7security_update_2021-007
OR
applemac_os_xMatch10.15.7security_update_2021-008
OR
applemac_os_xMatch10.15.7security_update_2022-001
OR
applemac_os_xMatch10.15.7security_update_2022-002
OR
applemac_os_xMatch10.15.7security_update_2022-003
OR
applemacosRange11.0–11.6.6
OR
applemacosRange12.0.0–12.4

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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

AI Score

7.8

Confidence

High

EPSS

0.001

Percentile

44.2%

JSON
Related for CVE-2021-45444
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