CVE-2021-45444

  1. OpenCVE
  2. Vulnerabilities (CVE)
  3. CVE-2021-45444
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.

7.8 /10

CVSS v3 : HIGH

V3 Legend

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

5.1 /10

CVSS v2.0 : MEDIUM

V2 Legend

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

Exploitability : 4.9 / Impact : 6.4

Access Vector NETWORK

Access Complexity HIGH

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References
Link Resource
http://seclists.org/fulldisclosure/2022/May/33 Mailing List Third Party Advisory
http://seclists.org/fulldisclosure/2022/May/35 Mailing List Third Party Advisory
http://seclists.org/fulldisclosure/2022/May/38 Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2022/02/msg00020.html Mailing List Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2P3LPMGENEHKDWFO4MWMZSZL6G7Y4CV7/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BWF3EXNBX5SVFDBL4ZFOD4GJBWFUKWN4/
https://support.apple.com/kb/HT213255 Third Party Advisory
https://support.apple.com/kb/HT213256 Third Party Advisory
https://support.apple.com/kb/HT213257 Third Party Advisory
https://vuln.ryotak.me/advisories/63 Third Party Advisory
https://www.debian.org/security/2022/dsa-5078 Third Party Advisory
https://zsh.sourceforge.io/releases.html Release Notes Third Party Advisory
Configurations

Configuration 1 (hide)

cpe:2.3:a:zsh:zsh:*:*:*:*:*:*:*:*

Configuration 2 (hide)

OR cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

Configuration 3 (hide)

OR cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*

Configuration 4 (hide)

OR cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-005:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-007:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-001:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-002:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-003:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-006:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-007:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-008:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2022-001:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2022-002:*:*:*:*:*:*
cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2022-003:*:*:*:*:*:*
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:*
History

17 May 2022, 07:15

Type Values Removed Values Added
References
  • (FULLDISC) http://seclists.org/fulldisclosure/2022/May/38 -
  • (FULLDISC) http://seclists.org/fulldisclosure/2022/May/33 -
  • (FULLDISC) http://seclists.org/fulldisclosure/2022/May/35 -

16 May 2022, 20:15

Type Values Removed Values Added
References
  • (CONFIRM) https://support.apple.com/kb/HT213255 -
  • (CONFIRM) https://support.apple.com/kb/HT213256 -
  • (CONFIRM) https://support.apple.com/kb/HT213257 -

29 Mar 2022, 16:08

Type Values Removed Values Added
References (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BWF3EXNBX5SVFDBL4ZFOD4GJBWFUKWN4/ - (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BWF3EXNBX5SVFDBL4ZFOD4GJBWFUKWN4/ - Mailing List, Third Party Advisory
CPE cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*

24 Feb 2022, 15:15

Type Values Removed Values Added
References
  • (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BWF3EXNBX5SVFDBL4ZFOD4GJBWFUKWN4/ -

23 Feb 2022, 20:16

Type Values Removed Values Added
CVSS v2 : 6.8
v3 : 8.8 		v2 : 5.1
v3 : 7.8

22 Feb 2022, 18:31

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown 		v2 : 6.8
v3 : 8.8
CWE NVD-CWE-noinfo
CPE cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:a:zsh:zsh:*:*:*:*:*:*:*:*
References (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2P3LPMGENEHKDWFO4MWMZSZL6G7Y4CV7/ - (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2P3LPMGENEHKDWFO4MWMZSZL6G7Y4CV7/ - Mailing List, Third Party Advisory
References (MISC) https://vuln.ryotak.me/advisories/63 - (MISC) https://vuln.ryotak.me/advisories/63 - Third Party Advisory
References (DEBIAN) https://www.debian.org/security/2022/dsa-5078 - (DEBIAN) https://www.debian.org/security/2022/dsa-5078 - Third Party Advisory
References (MLIST) https://lists.debian.org/debian-lts-announce/2022/02/msg00020.html - (MLIST) https://lists.debian.org/debian-lts-announce/2022/02/msg00020.html - Mailing List, Third Party Advisory
References (MISC) https://zsh.sourceforge.io/releases.html - (MISC) https://zsh.sourceforge.io/releases.html - Release Notes, Third Party Advisory

18 Feb 2022, 11:15

Type Values Removed Values Added
References
  • (MLIST) https://lists.debian.org/debian-lts-announce/2022/02/msg00020.html -

16 Feb 2022, 20:15

Type Values Removed Values Added
References
  • (DEBIAN) https://www.debian.org/security/2022/dsa-5078 -

16 Feb 2022, 04:15

Type Values Removed Values Added
References
  • (FEDORA) https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2P3LPMGENEHKDWFO4MWMZSZL6G7Y4CV7/ -

14 Feb 2022, 12:15

Type Values Removed Values Added
New CVE
Information

Published : 2022-02-14 12:15

Updated : 2024-02-04 22:29

NVD link : CVE-2021-45444

Mitre link : CVE-2021-45444

CVE.ORG link : CVE-2021-45444

JSON object : View

Products Affected

zsh

  • zsh

apple

  • macos
  • mac_os_x

fedoraproject

  • fedora

debian

  • debian_linux
CWE
NVD-CWE-noinfo