#VU70130 Heap-based buffer overflow in Vim - CVE-2022-4141

Vulnerability identifier: #VU70130

Vulnerability risk: Medium

CVSSv4.0: 4 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2022-4141

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. A remote attacker can trick the victim to execute the CTRL-W gf in the expression used in the RHS of the substitute command, 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: 9.0.0000 - 9.0.0946

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External links
https://huntr.dev/bounties/20ece512-c600-45ac-8a84-d0931e05541f
https://github.com/vim/vim/commit/cc762a48d42b579fb7bdec2c614636b830342dd5
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/AZ3JMSUCR6Y7626RDWQ2HNSUFIQOJ33G/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V6ZNKVN4GICORTVFKVCM4MSOXCYWNHUC/

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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.