Vulnerability identifier: #VU30494

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-20079

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Vim
Client/Desktop applications / Office applications

Vendor: Vim.org

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

The autocmd feature in window.c in Vim before 8.1.2136 accesses freed memory.

Mitigation
Install update from vendor's website.

Vulnerable software versions

Vim: 8.1.0000 - 8.1.2135

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External links
http://github.com/vim/vim/commit/ec66c41d84e574baf8009dbc0bd088d2bc5b2421
http://github.com/vim/vim/compare/v8.1.2135...v8.1.2136
http://packetstormsecurity.com/files/154898
http://usn.ubuntu.com/4309-1/

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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.