#VU33141 Integer overflow in Vim - CVE-2017-6350

Vulnerability identifier: #VU33141

Vulnerability risk: Medium

CVSSv4.0: 2 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2017-6350

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 execute arbitrary code on the target system.

The vulnerability exists due to integer overflow when reading undo files. A remote attacker can trick the victim to open a specially crafted undo file, trigger integer 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: 8.0.0300 - 8.0.0377

---

External links
https://www.securityfocus.com/bid/96448
https://www.securitytracker.com/id/1037949
https://github.com/vim/vim/commit/0c8485f0e4931463c0f7986e1ea84a7d79f10c75
https://groups.google.com/forum/#!topic/vim_dev/L_dOHOOiQ5Q
https://groups.google.com/forum/#!topic/vim_dev/QPZc0CY9j3Y
https://security.gentoo.org/glsa/201706-26
https://usn.ubuntu.com/4309-1/

---

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.