Vulnerability DatabaseCVE-2021-45444
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CVE-2021-45444
February 13, 2022
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.
Related Resources (18)
https://security-tracker.debian.org/tracker/CVE-2021-45444
http://seclists.org/fulldisclosure/2022/May/38
https://www.debian.org/security/2022/dsa-5078
https://security.alpinelinux.org/vuln/CVE-2021-45444
https://access.redhat.com/security/cve/CVE-2021-45444
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BWF3EXNBX5SVFDBL4ZFOD4GJBWFUKWN4/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2P3LPMGENEHKDWFO4MWMZSZL6G7Y4CV7/
http://seclists.org/fulldisclosure/2022/May/35
https://support.apple.com/kb/HT213257
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2P3LPMGENEHKDWFO4MWMZSZL6G7Y4CV7/
https://support.apple.com/kb/HT213256
https://vuln.ryotak.me/advisories/63
http://seclists.org/fulldisclosure/2022/May/33
https://support.apple.com/kb/HT213255
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BWF3EXNBX5SVFDBL4ZFOD4GJBWFUKWN4/
https://zsh.sourceforge.io/releases.html
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-45444
https://lists.debian.org/debian-lts-announce/2022/02/msg00020.html
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CVSS v4
Base Score:
8.5
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
PASSIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
7.8
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
CVSS v2
Base Score:
5.1
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
PARTIAL
EPSS
Base Score:
0.11