CVE-2017-20162 vercel ms index.js parse redos
Remote attackers can cause denial of service in the vercel ms library via inefficient regular expression complexity in the parse function.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2017-20162?
CVE-2017-20162 is a medium-severity denial of service vulnerability in vercel ms, published on 5 Jan 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability, which was classified as problematic, has been found in vercel ms up to 1.x. This issue affects the function parse of the file index.js. The manipulation of the argument str leads to inefficient regular expression complexity. The attack may be initiated remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 2.0.0 is able to address this issue. The patch is named caae2988ba2a37765d055c4eee63d383320ee662. It is recommended to upgrade the affected component. The associated identifier of this vulnerability is VDB-217451.
Weakness: CWE-1333
Which versions are affected by CVE-2017-20162?
2 open source packages ship an affected version, including ms. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
ms npm | All versions | 2.0.0 |
ms npm | All versions | 2.0.0 |
Products include Vercel Ms.
How do I fix CVE-2017-20162?
Upgrade ms to 2.0.0 or later.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2017-20162 being exploited?
There is no known exploitation of CVE-2017-20162 in the wild and no public exploit code.
Other vulnerabilities in vercel ms
Sources
Also known as AZL-43849, AZL-44002, AZL-45126, AZL-45201, CLSA-2026-1773360972, CLSA-2026-1776991063 and 6 more.