CVE-2024-43374

Publication date 16 August 2024

Last updated 30 May 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

4.5 · Medium

Score breakdown

The UNIX editor Vim prior to version 9.1.0678 has a use-after-free error in argument list handling. When adding a new file to the argument list, this triggers `Buf*` autocommands. If in such an autocommand the buffer that was just opened is closed (including the window where it is shown), this causes the window structure to be freed which contains a reference to the argument list that we are actually modifying. Once the autocommands are completed, the references to the window and argument list are no longer valid and as such cause an use-after-free. Impact is low since the user must either intentionally add some unusual autocommands that wipe a buffer during creation (either manually or by sourcing a malicious plugin), but it will crash Vim. The issue has been fixed as of Vim patch v9.1.0678.

Status

Package Ubuntu Release Status
vim 24.04 LTS noble
Fixed 2:9.1.0016-1ubuntu7.2
22.04 LTS jammy
Fixed 2:8.2.3995-1ubuntu2.18
20.04 LTS focal
Fixed 2:8.1.2269-1ubuntu5.24
18.04 LTS bionic
Fixed 2:8.0.1453-1ubuntu1.13+esm9
16.04 LTS xenial
Fixed 2:7.4.1689-3ubuntu1.5+esm24
14.04 LTS trusty
Fixed 2:7.4.052-1ubuntu3.1+esm18

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Severity score breakdown

Parameter Value
Base score 4.5 · Medium
Attack vector Local
Attack complexity High
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality Low
Integrity impact Low
Availability impact Low
Vector CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L