CVE-2020-36067 Improper Validation of Array Index in GJSON

Q: Which versions are affected by CVE-2020-36067?

3 open source packages ship an affected version, including github.com/tidwall/gjson. It affects 1 product.

Q: Is CVE-2020-36067 being exploited?

There is no known exploitation of CVE-2020-36067 in the wild and no public exploit code.

Q: How do I fix CVE-2020-36067?

Upgrade github.com/tidwall/gjson to 1.6.6 or later.

High 7.5 Published 5 Jan 2021 Updated 4 Aug 2024

Attackers can cause a denial of service via a crafted GET call in the GJSON Go library, requiring an upgrade to mitigate.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2020-36067?

CVE-2020-36067 is a high-severity denial of service vulnerability in n/a, published on 5 Jan 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

GJSON <=v1.6.5 allows attackers to cause a denial of service (panic: runtime error: slice bounds out of range) via a crafted GET call.

Weakness: CWE-129

Which versions are affected by CVE-2020-36067?

3 open source packages ship an affected version, including github.com/tidwall/gjson. It affects 1 product.

Package	Affected	Fixed in
`github.com/tidwall/gjson` Go	All versions	`1.6.6`
`github.com/tidwall/gjson` Go	All versions	`1.6.6`
`github.com/tidwall/gjson` Go	All versions	`1.6.6`

Products include Gjson Project Gjson.

How do I fix CVE-2020-36067?

Upgrade github.com/tidwall/gjson to 1.6.6 or later.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2020-36067 being exploited?

There is no known exploitation of CVE-2020-36067 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2020-36067, GHSA-p64j-r5f4-pwwx, GO-2021-0054, UBUNTU-CVE-2020-36067.