#VU66637 Heap-based buffer overflow in Vim


Published: 2022-08-18

Vulnerability identifier: #VU66637

Vulnerability risk: High

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-2522

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Vim
Client/Desktop applications / Office applications

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 within the ins_compl_infercase_gettext() function in insexpand.c. A remote attacker can trick the victim to open a specially crafted file, 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 - 9.0.0059


External links
http://github.com/vim/vim/commit/5fa9f23a63651a8abdb074b4fc2ec9b1adc6b089
http://huntr.dev/bounties/3a2d83af-9542-4d93-8784-98b115135a22
http://huntr.dev/bounties/3a2d83af-9542-4d93-8784-98b115135a22/
http://github.com/vim/vim/commit/b9e717367c395490149495cf375911b5d9de889e


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.


Latest bulletins with this vulnerability