#VU24174 OS Command Injection in hot-formula-parser


Published: 2020-01-10

Vulnerability identifier: #VU24174

Vulnerability risk: High

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

CVE-ID: N/A

CWE-ID: CWE-78

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
hot-formula-parser
Web applications / Modules and components for CMS

Vendor: jansiegel

Description

The vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.

The vulnerability exists due to software fails to sanitize values passed to the parse function and concatenates it in an eval call. If a value of the formula is supplied by user-controlled input it may allow attackers to run arbitrary commands in the server.
Parsing the following formula creates a test file in the present directory: "SUM([(function(){require('child_process').execSync('touch test')})(),2])"

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Update to version 3.0.1.

Vulnerable software versions

hot-formula-parser: 1.0.1 - 3.0.0


External links
http://www.npmjs.com/advisories/1439


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.


Latest bulletins with this vulnerability