#VU65395 Stack-based buffer overflow in Vim - CVE-2022-2304

Vulnerability identifier: #VU65395

Vulnerability risk: Low

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2022-2304

CWE-ID: CWE-121

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 execute arbitrary code on the target system.

The vulnerability exists due to a boundary error in spell_dump_compl() function at spell.c:4038. A remote unauthenticated attacker can trick the victim into opening a specially crafted file to trigger stack-based buffer overflow and execute arbitrary code on the target system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Vim: before 9.0.0035, 9.0.0035

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External links
https://github.com/vim/vim/commit/54e5fed6d27b747ff152cdb6edfb72ff60e70939
https://huntr.dev/bounties/eb7402f3-025a-402f-97a7-c38700d9548a
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UXPO5EHDV6J4B27E65DOQGZFELUFPRSK/

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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.