Denial of service in parse-server package for npm

1) Input validation error

EUVDB-ID: #VU56291

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-39187

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input in the "explain" option. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

parse-server: 1.0.0 - 4.10.2

External links

http://jira.mongodb.org/browse/NODE-3463
http://github.com/parse-community/parse-server/commit/308668c89474223e2448be92d6823b52c1c313ec
http://github.com/parse-community/parse-server/releases/tag/4.10.3
http://github.com/parse-community/parse-server/security/advisories/GHSA-xqp8-w826-hh6x

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.