#VU80505 Use-after-free in Vim - CVE-2023-4750

Vulnerability identifier: #VU80505

Vulnerability risk: Low

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-4750

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 crash the application.

The vulnerability exists due to a use-after-free error within the is_qf_win() function in quickfix.c. 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: 9.0.0000 - 9.0.1856

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External links
http://github.com/vim/vim/releases/tag/v9.0.1857
http://github.com/vim/vim/commit/fc68299d436cf87453e432daa77b6d545df4d7ed
http://huntr.dev/bounties/1ab3ebdf-fe7d-4436-b483-9a586e03b0ea

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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.