# CVE-2020-4719: Server-side request forgery in Cloud APM

> An authenticated admin can trigger arbitrary DNS requests via webhook configuration, potentially enabling Server-Side Request Forgery attacks.

- **Severity:** Medium 4.9 (`CVSS:3.0/UI:N/PR:H/I:H/AV:N/A:N/S:U/C:N/AC:L/RL:O/RC:C/E:U`)
- **Exploited in the wild:** Not known
- **Login needed:** An administrator
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Mar 2021
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-4jch-x64f-4whq

## What is CVE-2020-4719?

CVE-2020-4719 is a medium-severity server-side request forgery vulnerability in IBM Cloud APM, published on 2 Mar 2021. An attacker needs administrator access to exploit it, with no action from the victim.

### Official description

The IBM Cloud APM 8.1.4 server will issue a DNS request to resolve any hostname specified in the Cloud Event Management Webhook URL configuration definition. This could enable an authenticated user with admin authorization to create DNS query strings that are not hostnames. IBM X-Force ID: 187861.

Weakness: CWE-706 (Use of Incorrectly-Resolved Name or Reference)

## Which versions are affected by CVE-2020-4719?

It affects 1 product.


Products: Ibm Cloud Application Performance Management.

## How do I fix CVE-2020-4719?

No fix has been published for CVE-2020-4719 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-4719 being exploited?

There is no known exploitation of CVE-2020-4719 in the wild and no public exploit code.

## Other vulnerabilities in IBM Cloud APM

- [CVE-2019-4131](https://insights.sbomify.com/CVE-2019-4131/): Server-side request forgery in Monitoring (medium 5.3)
- [CVE-2020-4725](https://insights.sbomify.com/CVE-2020-4725/): Cross-site scripting in Cloud APM (medium 4.3)
- [CVE-2020-4726](https://insights.sbomify.com/CVE-2020-4726/): Information disclosure in Cloud APM (medium 4.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-4719 and fix it if it is affected.

What it is: CVE-2020-4719 is a medium-severity server-side request forgery vulnerability in IBM Cloud APM, published on 2 Mar 2021. An attacker needs administrator access to exploit it, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-4719 in the wild and no public exploit code.

Affected product: IBM Cloud APM. 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-2020-4719/ (Markdown: https://insights.sbomify.com/CVE-2020-4719/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-4719
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-4719
- OSV: https://osv.dev/vulnerability/CVE-2020-4719

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-4719/
Summaries are generated and may contain mistakes; the official description above is the record.