Vulnerability identifier: #VU76670

Vulnerability risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-2426

CWE-ID: CWE-823

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 an out-of-range pointer offset within the mb_charlen() function in mbyte.c. A remote attacker can trick the victim to open a specially crafted file and crash the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Vim: 9.0.0000 - 9.0.1498

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External links
http://huntr.dev/bounties/3451be4c-91c8-4d08-926b-cbff7396f425
http://github.com/vim/vim/commit/caf642c25de526229264cab9425e7c9979f3509b
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LOJP6M7ZTKZQYOGVOOAY6TIE6ACBJL55/
http://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PCLJN4QINITA3ZASKLEJ64C5TFNKELMO/

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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.