CVE-2021-4187: vim is vulnerable to Use After Free

High severity · published Dec 29, 2021

CVE-2021-4187

vim is vulnerable to Use After Free

7.8

CVSS

1.7%

EPSS

On KEV

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack vector

Local

Complexity

Low

Privileges

None

User interaction

Required

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)1.7% · higher than 78% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

macOS · Apple

before 12.3; 11.0 before 11.6.6; 10.15.7 · source: NVD

Fedora · Fedoraproject

34; 35 · source: NVD

Mac OS X · Apple

10.15.7; 10.15.7; 10.15.7; 10.15.7; 10.15.7; 10.15.7; +7 more · source: NVD

Vim · Vim

through 8.2.3912 · source: NVD

Affected product

macOS

Apple

All macOS CVEs

References

NVD

https://nvd.nist.gov/vuln/detail/CVE-2021-4187

CVE.org

https://www.cve.org/CVERecord?id=CVE-2021-4187

Mailing List

http://seclists.org/fulldisclosure/2022/Jul/14

Mailing List

http://seclists.org/fulldisclosure/2022/Mar/29

Mailing List

http://seclists.org/fulldisclosure/2022/May/35

Mailing List

http://www.openwall.com/lists/oss-security/2022/01/15/1

Patch

https://github.com/vim/vim/commit/4bf1006cae7e87259ccd5219128c3dba75774441

Exploit

https://huntr.dev/bounties/a8bee03a-6e2e-43bf-bee3-4968c5386a2e