#VU66635 Out-of-bounds read in Vim - CVE-2022-2581

Vulnerability identifier: #VU66635

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-2022-2581

CWE-ID: CWE-125

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 boundary condition within the utf_ptr2char() function in regexp.c. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger an out-of-bounds read error and crash the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Vim: 9.0.0000 - 9.0.0103

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External links
http://huntr.dev/bounties/0bedbae2-82ae-46ae-aa68-1c28b309b60b
http://github.com/vim/vim/commit/f50940531dd57135fe60aa393ac9d3281f352d88

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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.