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CVE-2021-4166

Published: 25 December 2021

vim is vulnerable to Out-of-bounds Read

Notes

AuthorNote
ccdm94
code in bionic and earlier does not include file src/arglist.c, which
is the patched file. The patched code for these releases seems to be
instead present in src/buffer.c, as seen in commit 4ad62155a10.
Changes that led to the creation of file arglist.c and changes made
to the code that follow the creation of this file are significant,
which would result in an intrusive backport should the altered CVE
patch and other necessary changes be applied in bionic and earlier.
Consequently, the issue will be marked as ignored for the previously
mentioned releases.

Priority

Medium

Cvss 3 Severity Score

7.1

Score breakdown

Status

Package Release Status
vim
Launchpad, Ubuntu, Debian
focal
Released (2:8.1.2269-1ubuntu5.14)
jammy Not vulnerable
(2:8.2.3995-1ubuntu2)
kinetic Not vulnerable
(2:8.2.3995-1ubuntu3)
hirsute Ignored
(end of life)
bionic Ignored
(see notes)
trusty Ignored
(see notes)
upstream
Released (8.2.3884)
xenial Ignored
(see notes)
impish Ignored
(end of life)
Patches:
upstream: https://github.com/vim/vim/commit/6f98371532fcff911b462d51bc64f2ce8a6ae682

Severity score breakdown

Parameter Value
Base score 7.1
Attack vector Local
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:H