#VU83389 Integer overflow in Vim - CVE-2023-48234

Vulnerability identifier: #VU83389

Vulnerability risk: Low

CVSSv4.0: 0.5 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-48234

CWE-ID: CWE-190

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 integer overflow when using the z= command. A remote attacker can trick the victim to open a specially crafted file, trigger an integer overflow and crash the application.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Vim: before 9.0.2109, 9.0.2109

---

External links
https://github.com/vim/vim/security/advisories/GHSA-59gw-c949-6phq
https://github.com/vim/vim/commit/58f9befca1fa172068effad7f2ea5a9d6a7b0cca
https://www.openwall.com/lists/oss-security/2023/11/16/1

---

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.