#VU87790 Inefficient regular expression complexity in ms - CVE-2017-20162
Vulnerability identifier: #VU87790
Vulnerability risk: Medium
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]
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
External links
https://github.com/vercel/ms/releases/tag/2.0.0
https://vuldb.com/?ctiid.217451
https://github.com/vercel/ms/pull/89
https://vuldb.com/?id.217451
https://github.com/vercel/ms/commit/caae2988ba2a37765d055c4eee63d383320ee662
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.
