#VU64825 Improper Validation of Array Index in gjson - CVE-2020-36067

Vulnerability identifier: #VU64825

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-36067

CWE-ID: CWE-129

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
gjson
Universal components / Libraries / Programming Languages & Components

Vendor: tidwall

Description

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

The vulnerability exists due to improper validation of array index in GJSON. A remote attacker can pass a specially crafted GET call to the application and perform a denial of service attack.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

gjson: 1.0.0 - 1.14.1

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External links
https://github.com/tidwall/gjson/issues/196

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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.