CVE-2021-45444

    Dashboard / Vulnerabilities / CVE-2021-45444

    CVE-2021-45444

    Published: 14 Feb 2022Last Modified: 8 Jul 2026

    Summary:

    Details: 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.

    References: 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/, http://seclists.org/fulldisclosure/2022/May/33, http://seclists.org/fulldisclosure/2022/May/35, http://seclists.org/fulldisclosure/2022/May/38, https://lists.debian.org/debian-lts-announce/2022/02/msg00020.html, https://support.apple.com/kb/HT213255, https://support.apple.com/kb/HT213256, https://support.apple.com/kb/HT213257, https://vuln.ryotak.me/advisories/63, https://www.debian.org/security/2022/dsa-5078, https://zsh.sourceforge.io/releases.html

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -1a490c7050cfacd5daf8376d5a1f0e8cb14ccda5

    Affected versions

    zsh-5.8

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-45444 | CVE-DB