Denial of service in PapaParse

1) Incorrect regular expression

EUVDB-ID: #VU74226

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-2020-36649

CWE-ID: CWE-185 - Incorrect Regular Expression

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform regular expression denial of service (ReDoS) attack.

The vulnerability exists due to usage of a very complex regular expression in papaparse.js. A remote attacker can pass specially crafted input to the application and consume extensive system resources, resulting in a denial of service condition.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

papaparse: 5.0.0 - 5.1.1

External links

http://github.com/mholt/PapaParse/commit/235a12758cd77266d2e98fd715f53536b34ad621
http://github.com/mholt/PapaParse/pull/779
http://github.com/mholt/PapaParse/issues/777
http://vuldb.com/?ctiid.218004
http://vuldb.com/?id.218004
http://github.com/mholt/PapaParse/releases/tag/5.2.0

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.