CVE-2024-43374 Affecting vim package, versions <2:7.4.1689-3ubuntu1.5+esm24


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.04% (11th percentile)

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  • Snyk IDSNYK-UBUNTU1604-VIM-7830396
  • published5 Sept 2024
  • disclosed16 Aug 2024

Introduced: 16 Aug 2024

CVE-2024-43374  (opens in a new tab)

How to fix?

Upgrade Ubuntu:16.04 vim to version 2:7.4.1689-3ubuntu1.5+esm24 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream vim package and not the vim package as distributed by Ubuntu. See How to fix? for Ubuntu:16.04 relevant fixed versions and status.

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 Once the autocommands are completed, the references to the window and argument list are no longer valid and as such cause an use-after-free.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.

CVSS Scores

version 3.1