Vulnerability identifier: #VU83421

Vulnerability risk: Critical

CVSSv3.1: 9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:U/RC:C]

CVE-ID: CVE-2020-36632

CWE-ID: CWE-1321

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
flat
Other software / Other software solutions

Vendor: hughsk (Hugh Kennedy)

Description

The vulnerability allows a remote attacker to execute arbitrary JavaScript code.

The vulnerability exists in the function unflatten of the file index.js. A remote attacker can pass specially crafted input to the application and perform prototype pollution, which can result in information disclosure or data manipulation.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability..

Vulnerable software versions

flat: 1.0.0 - 5.0.1

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External links
http://github.com/hughsk/flat/pull/106
http://vuldb.com/?ctiid.216777
http://vuldb.com/?id.216777
http://github.com/hughsk/flat/issues/105
http://github.com/hughsk/flat/releases/tag/5.0.1
http://github.com/hughsk/flat/commit/20ef0ef55dfa028caddaedbcb33efbdb04d18e13

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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.