# CVE-2022-33082: Denial of service in Open Policy Agent

> Attackers can cause a Denial of Service in Open Policy Agent by submitting crafted input to the AST parser.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 30 Jun 2022
- **Updated:** 3 Aug 2024
- **Also known as:** GHSA-2m4x-4q9j-w97g, GO-2022-0574

## What is CVE-2022-33082?

CVE-2022-33082 is a high-severity denial of service vulnerability in n/a, published on 30 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

An issue in the AST parser (ast/compile.go) of Open Policy Agent v0.10.2 allows attackers to cause a Denial of Service (DoS) via a crafted input.

## Which versions are affected by CVE-2022-33082?

3 open source packages ship an affected version, including github.com/open-policy-agent/opa. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `github.com/open-policy-agent/opa` | Go | All versions | 0.42.0 |
| `github.com/open-policy-agent/opa` | Go | All versions | 0.42.0 |
| `github.com/open-policy-agent/opa` | Go | All versions | 0.42.0 |

Products: Openpolicyagent Open Policy Agent.

## How do I fix CVE-2022-33082?

Upgrade github.com/open-policy-agent/opa to 0.42.0 or later.

## Is CVE-2022-33082 being exploited?

There is no known exploitation of CVE-2022-33082 in the wild and no public exploit code.

Public exploit code:

- https://github.com/cyberqueenmeg/cve-2022-33082-exploit (github_poc): https://github.com/cyberqueenmeg/cve-2022-33082-exploit

## Other vulnerabilities in n/a

- [CVE-2022-28946](https://insights.sbomify.com/CVE-2022-28946/): Out of bounds memory access in github.com/open-policy-agent/opa (high 7.5)
- [CVE-2022-36085](https://insights.sbomify.com/CVE-2022-36085/): OPA Compiler: Bypass of WithUnsafeBuiltins using `with` keyword to mock functions (high 7.4)
- [CVE-2022-23628](https://insights.sbomify.com/CVE-2022-23628/): Array literal misordering in github.com/open-policy-agent/opa (medium 6.3)
- [CVE-2024-8260](https://insights.sbomify.com/CVE-2024-8260/): OPA SMB Force-Authentication (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-33082 and fix it if it is affected.

What it is: CVE-2022-33082 is a high-severity denial of service vulnerability in n/a, published on 30 Jun 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-33082 in the wild and no public exploit code.

Affected packages and fixed versions:
- github.com/open-policy-agent/opa (Go): affected all versions; fixed in 0.42.0
- github.com/open-policy-agent/opa (Go): affected all versions; fixed in 0.42.0
- github.com/open-policy-agent/opa (Go): affected all versions; fixed in 0.42.0

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2022-33082/ (Markdown: https://insights.sbomify.com/CVE-2022-33082/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-33082
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-33082
- OSV: https://osv.dev/vulnerability/CVE-2022-33082

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-33082/
Summaries are generated and may contain mistakes; the official description above is the record.