# CVE-2022-25761: Denial of Service (DoS)

> An attacker can cause a denial of service in open62541 by sending unlimited large chunks without closing the session, exhausting resources.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Aug 2022
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-p69w-fx96-62pg

## What is CVE-2022-25761?

CVE-2022-25761 is a high-severity denial of service vulnerability in Fedoraproject Fedora, published on 23 Aug 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The package open62541/open62541 before 1.2.5, from 1.3-rc1 and before 1.3.1 are vulnerable to Denial of Service (DoS) due to a missing limitation on the number of received chunks - per single session or in total for all concurrent sessions. An attacker can exploit this vulnerability by sending an unlimited number of huge chunks (e.g. 2GB each) without sending the Final closing chunk.

Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling)

## Which versions are affected by CVE-2022-25761?

It affects 2 products.


Products: Fedoraproject Fedora, Open62541 Open62541.

## How do I fix CVE-2022-25761?

No fix has been published for CVE-2022-25761 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-25761 being exploited?

There is no known exploitation of CVE-2022-25761 in the wild and no public exploit code.

## Other vulnerabilities in Fedoraproject Fedora

- [CVE-2024-4577](https://insights.sbomify.com/CVE-2024-4577/): PHP-CGI OS Command Injection (critical 9.8, exploited in the wild)
- [CVE-2021-39226](https://insights.sbomify.com/CVE-2021-39226/): Grafana Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2019-5544](https://insights.sbomify.com/CVE-2019-5544/): VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2024-4947](https://insights.sbomify.com/CVE-2024-4947/): Google Chromium V8 Type Confusion (critical 9.6, exploited in the wild)
- [CVE-2024-4671](https://insights.sbomify.com/CVE-2024-4671/): Google Chromium Visuals Use-After-Free (critical 9.6, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-25761 and fix it if it is affected.

What it is: CVE-2022-25761 is a high-severity denial of service vulnerability in Fedoraproject Fedora, published on 23 Aug 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-2022-25761 in the wild and no public exploit code.

Affected product: Fedoraproject Fedora. No package-level version data is available, so check the vendor advisory linked from the reference page.

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-2022-25761/ (Markdown: https://insights.sbomify.com/CVE-2022-25761/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-25761
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-25761
- OSV: https://osv.dev/vulnerability/CVE-2022-25761

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-25761/
Summaries are generated and may contain mistakes; the official description above is the record.