CVE-2022-1962 Stack exhaustion due to deeply nested types in go/parser
An attacker can cause a panic and denial of service in applications using the Go parser by providing deeply nested types or declarations.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-1962?
CVE-2022-1962 is a medium-severity denial of service vulnerability in Golang Go, published on 9 Aug 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Uncontrolled recursion in the Parse functions in go/parser before Go 1.17.12 and Go 1.18.4 allow an attacker to cause a panic due to stack exhaustion via deeply nested types or declarations.
Weakness: CWE-674
Which versions are affected by CVE-2022-1962?
2 open source packages ship an affected version, including golang and stdlib. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
golang Bitnami | All versions | 1.17.12, 1.18.4 |
stdlib Go | All versions | 1.17.12, 1.18.4 |
Linux distribution packages (1)
velero openSUSE:Tumbleweed | All versions | 1.9.2-1.1 |
Products include Golang Go.
How do I fix CVE-2022-1962?
Upgrade golang to a fixed version for your release line: 1.17.12 or 1.18.4.
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-2022-1962 being exploited?
There is no known exploitation of CVE-2022-1962 in the wild and no public exploit code.
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Sources
Also known as AZL-10530, AZL-78972, AZL-98724, BIT-golang-2022-1962, DEBIAN-CVE-2022-1962, GHSA-6mwq-4j3f-rr3x and 5 more.