OS Command Injection in Vim Vim

1) OS Command Injection

EUVDB-ID: #VU31049

Risk: Low

CVSSv4.0: 7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2019-12735

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: Yes

Description

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

getchar.c in Vim before 8.1.1365 and Neovim before 0.3.6 allows remote attackers to execute arbitrary OS commands via the :source! command in a modeline, as demonstrated by execute in Vim, and assert_fails or nvim_input in Neovim.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Vim: 8.1.0000 - 8.1.1364

CPE2.3

• cpe:2.3:a:vim_org:vim:8.1.1364:*:*:*:*:*:*:*

External links

https://lists.opensuse.org/opensuse-security-announce/2019-06/msg00031.html
https://lists.opensuse.org/opensuse-security-announce/2019-06/msg00036.html
https://lists.opensuse.org/opensuse-security-announce/2019-06/msg00037.html
https://lists.opensuse.org/opensuse-security-announce/2019-07/msg00034.html
https://lists.opensuse.org/opensuse-security-announce/2019-07/msg00050.html
https://lists.opensuse.org/opensuse-security-announce/2019-08/msg00075.html
https://www.securityfocus.com/bid/108724
https://access.redhat.com/errata/RHSA-2019:1619
https://access.redhat.com/errata/RHSA-2019:1774
https://access.redhat.com/errata/RHSA-2019:1793
https://access.redhat.com/errata/RHSA-2019:1947
https://bugs.debian.org/930020
https://bugs.debian.org/930024
https://github.com/neovim/neovim/pull/10082
https://github.com/numirias/security/blob/master/doc/2019-06-04_ace-vim-neovim.md
https://github.com/vim/vim/commit/53575521406739cf20bbe4e384d88e7dca11f040
https://lists.debian.org/debian-lts-announce/2019/08/msg00003.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2BMDSHTF754TITC6AQJPCS5IRIDMMIM7/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TRIRBC2YRGKPAWVRMZS4SZTGGCVRVZPR/
https://seclists.org/bugtraq/2019/Jul/39
https://seclists.org/bugtraq/2019/Jun/33
https://security.gentoo.org/glsa/202003-04
https://support.f5.com/csp/article/K93144355
https://support.f5.com/csp/article/K93144355?utm_source=f5support&utm_medium=RSS
https://usn.ubuntu.com/4016-1/
https://usn.ubuntu.com/4016-2/
https://www.debian.org/security/2019/dsa-4467
https://www.debian.org/security/2019/dsa-4487

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.