#VU83392 Use-after-free in Vim - CVE-2023-48231

Vulnerability identifier: #VU83392

Vulnerability risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-48231

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Vim
Client/Desktop applications / Software for system administration

Vendor: Vim.org

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error when closing the window. A remote attacker can trick the victim to open a specially crafted file and crash the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Vim: before 9.0.2106, 9.0.2106

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External links
https://github.com/vim/vim/security/advisories/GHSA-8g46-v9ff-c765
https://github.com/vim/vim/commit/25aabc2b8ee1e19ced6f4da9d866cf9378fc4c5a
https://www.openwall.com/lists/oss-security/2023/11/16/1

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.