Vulnerability identifier: #VU80337

Vulnerability risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-3801

CWE-ID: CWE-185

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
prism
Other software / Other software solutions

Vendor:

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 regular expressions. A remote attacker can trick the victim into opening specially crafted data and perform regular expression denial of service (ReDos) attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

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External links
http://huntr.dev/bounties/8c16ab31-6eb6-46d1-b9a4-387222fe1b8a
http://github.com/prismjs/prism/commit/0ff371bb4775a131634f47d0fe85794c547232f9

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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.