#VU65408 Out-of-bounds read in Vim - CVE-2022-2287

Vulnerability identifier: #VU65408

Vulnerability risk: High

CVSSv4.0: 4.3 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2022-2287

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 gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in suggest_trie_walk() function abusing array byts in line spellsuggest.c:1925. A remote attacker can create a specially crafted file, trick the victim into opening it, trigger out-of-bounds read error and read contents of memory on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Vim: before 9.0.0021, 9.0.0021

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External links
https://github.com/vim/vim/commit/5e59ea54c0c37c2f84770f068d95280069828774
https://huntr.dev/bounties/654aa069-3a9d-45d3-9a52-c1cf3490c284
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UXPO5EHDV6J4B27E65DOQGZFELUFPRSK/

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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.