high
7.1
CWE
125
Advisory Published
Updated

CVE-2021-4166: Out-of-bounds Read in vim/vim

First published: Sat Dec 25 2021(Updated: )

Last updated 24 July 2024

Credit: CVE-2021-4136 CVE-2021-4166 CVE-2021-4173 CVE-2021-4187 CVE-2021-4192 CVE-2021-4193 CVE-2021-46059 CVE-2022-0128 CVE-2022-0156 CVE-2022-0158 CVE-2021-4136 CVE-2021-4166 CVE-2021-4173 CVE-2021-4187 CVE-2021-4192 CVE-2021-4193 CVE-2021-46059 CVE-2022-0128 security@huntr.dev security@huntr.dev

Affected SoftwareAffected VersionHow to fix
Vim Vim<8.2.3884
Redhat Enterprise Linux=8.0
openSUSE Factory
SUSE Linux Enterprise=12.0
SUSE Linux Enterprise=15.0
Debian Debian Linux=9.0
Debian Debian Linux=10.0
Debian Debian Linux=11.0
Fedoraproject Fedora=34
Fedoraproject Fedora=35
Apple Mac OS X=10.15.7
Apple Mac OS X=10.15.7-security_update_2020-001
Apple Mac OS X=10.15.7-security_update_2021-001
Apple Mac OS X=10.15.7-security_update_2021-002
Apple Mac OS X=10.15.7-security_update_2021-003
Apple Mac OS X=10.15.7-security_update_2021-004
Apple Mac OS X=10.15.7-security_update_2021-005
Apple Mac OS X=10.15.7-security_update_2021-006
Apple Mac OS X=10.15.7-security_update_2021-007
Apple Mac OS X=10.15.7-security_update_2021-008
Apple Mac OS X=10.15.7-security_update_2022-001
Apple Mac OS X=10.15.7-security_update_2022-002
Apple Mac OS X=10.15.7-security_update_2022-003
Apple macOS<12.3
Apple macOS>=11.0<11.6.6
Apple macOS=10.15.7-security_update_2022-004
Apple macOS Monterey<12.3
12.3
Apple Catalina
Apple macOS Big Sur<11.6.6
11.6.6
debian/vim<=2:8.2.2434-3+deb11u1
2:9.0.1378-2
2:9.1.0777-1
2:9.1.0861-1

Remedy

https://github.com/vim/vim/commit/6f98371532fcff911b462d51bc64f2ce8a6ae682

Remedy

https://huntr.dev/bounties/229df5dd-5507-44e9-832c-c70364bdf035

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is CVE-2021-4166?

    CVE-2021-4166 is a vulnerability that allows for out-of-bounds read in Vim.

  • How does CVE-2021-4166 impact Vim?

    CVE-2021-4166 allows an attacker to read data outside of the bounds of an array in Vim, potentially leading to information disclosure or a crash.

  • Is Apple Catalina affected by CVE-2021-4166?

    Yes, Apple Catalina is affected by CVE-2021-4166.

  • What is the recommended version of macOS Big Sur to fix CVE-2021-4166?

    The recommended version of macOS Big Sur to fix CVE-2021-4166 is 11.6.6.

  • How can I fix the CVE-2021-4166 vulnerability on Ubuntu?

    To fix the CVE-2021-4166 vulnerability on Ubuntu, update the vim package to version 2:8.1.2269-1ubuntu5.14 or later.

  • How can I fix the CVE-2021-4166 vulnerability on Debian?

    To fix the CVE-2021-4166 vulnerability on Debian, update the vim package to version 2:9.0.1378-2 or 2:9.0.1894-1, depending on the Debian version.

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