Vulnerability identifier: #VU87790

Vulnerability risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2017-20162

CWE-ID: CWE-1333

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ms
Other software / Other software solutions

Vendor: vercel

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient input validation when processing untrusted input with a regular expressions in the function parse of the file index.js.. A remote attacker can pass specially crafted data to the application and perform regular expression denial of service (ReDos) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

ms: 0.2.0 - 1.0.0

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External links
http://github.com/vercel/ms/releases/tag/2.0.0
http://vuldb.com/?ctiid.217451
http://github.com/vercel/ms/pull/89
http://vuldb.com/?id.217451
http://github.com/vercel/ms/commit/caae2988ba2a37765d055c4eee63d383320ee662

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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.