#VU74499 NULL pointer dereference in Vim - CVE-2023-1355

Vulnerability identifier: #VU74499

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-2023-1355

CWE-ID: CWE-476

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 perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in within the class_object_index() function in vim9class.c in Vim. A remote attacker can perform a denial of service (DoS) attack.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Vim: 9.0.0000 - 9.0.1401

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External links
https://github.com/vim/vim/commit/d13dd30240e32071210f55b587182ff48757ea46
https://huntr.dev/bounties/4d0a9615-d438-4f5c-8dd6-aa22f4b716d9
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IE44W6WMMREYCW3GJHPSYP7NK2VT5NY6/

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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.