#VU65418 Heap-based buffer overflow in Vim - CVE-2022-2344

Vulnerability identifier: #VU65418

Vulnerability risk: High

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:Amber]

CVE-ID: CVE-2022-2344

CWE-ID: CWE-122

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 ins_compl_add() function at insexpand.c:751. A remote attacker can trick the victim into opening a specially crafted data, trigger a heap-based buffer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Vim: before 9.0.0046, 9.0.0046

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External links
https://github.com/vim/vim/commit/baefde14550231f6468ac2ed2ed495bc381c0c92
https://huntr.dev/bounties/4a095ed9-3125-464a-b656-c31b437e1996

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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.