# CVE-2022-20717: Cisco SD-WAN vEdge Routers Denial of Service Vulnerability

> An authenticated local attacker can cause a Cisco SD-WAN vEdge router to crash via memory exhaustion, resulting in a denial of service.

- **Severity:** Medium 5.5 (`CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H`)
- **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:** No
- **Published:** 15 Apr 2022
- **Updated:** 6 Nov 2024
- **Also known as:** GHSA-g8c4-6cm2-mvxv

## What is CVE-2022-20717?

CVE-2022-20717 is a medium-severity denial of service vulnerability in Cisco SD-WAN vEdge router, published on 15 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability in the NETCONF process of Cisco SD-WAN vEdge Routers could allow an authenticated, local attacker to cause an affected device to run out of memory, resulting in a denial of service (DoS) condition. This vulnerability is due to insufficient memory management when an affected device receives large amounts of traffic. An attacker could exploit this vulnerability by sending malicious traffic to an affected device. A successful exploit could allow the attacker to cause the device to crash, resulting in a DoS condition.

Weakness: CWE-770 (Allocation of Resources Without Limits or Throttling), CWE-789 (Memory Allocation with Excessive Size Value)

## Which versions are affected by CVE-2022-20717?

It affects 1 product.


Products: Cisco Sd-Wan Vedge Router.

## How do I fix CVE-2022-20717?

No fix has been published for CVE-2022-20717 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-20717 being exploited?

There is no known exploitation of CVE-2022-20717 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-20717 and fix it if it is affected.

What it is: CVE-2022-20717 is a medium-severity denial of service vulnerability in Cisco SD-WAN vEdge router, published on 15 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2022-20717 in the wild and no public exploit code.

Affected product: Cisco SD-WAN vEdge router. 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-2022-20717/ (Markdown: https://insights.sbomify.com/CVE-2022-20717/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-20717
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-20717
- OSV: https://osv.dev/vulnerability/CVE-2022-20717

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From sbomify Insights: https://insights.sbomify.com/CVE-2022-20717/
Summaries are generated and may contain mistakes; the official description above is the record.