# CVE-2021-20529: Information disclosure in Control Center

> An attacker can obtain sensitive version information from IBM Control Center, which may facilitate further targeted attacks against the system.

- **Severity:** Medium 5.3 (`CVSS:3.0/UI:N/S:U/I:N/AV:N/C:L/PR:N/AC:L/A:N/E:U/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 19 May 2021
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-p8mv-9xvj-g4f7

## What is CVE-2021-20529?

CVE-2021-20529 is a medium-severity vulnerability in IBM Control Center, published on 19 May 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

IBM Control Center 6.2.0.0 could allow a user to obtain sensitive version information that could be used in further attacks against the system. IBM X-Force ID: 198763.

## Which versions are affected by CVE-2021-20529?

It affects 1 product.


Products: Ibm Control Center.

## How do I fix CVE-2021-20529?

No fix has been published for CVE-2021-20529 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-20529 being exploited?

There is no known exploitation of CVE-2021-20529 in the wild and no public exploit code.

## Other vulnerabilities in IBM Control Center

- [CVE-2017-1758](https://insights.sbomify.com/CVE-2017-1758/): XML external entity in Control Center (high 7.1)
- [CVE-2024-35112](https://insights.sbomify.com/CVE-2024-35112/): IBM Control Center cross-site scripting (medium 5.4)
- [CVE-2021-20528](https://insights.sbomify.com/CVE-2021-20528/): Cross-site scripting in Control Center (medium 5.4)
- [CVE-2023-43052](https://insights.sbomify.com/CVE-2023-43052/): IBM Control Center external service interaction (medium 5.3)
- [CVE-2024-35114](https://insights.sbomify.com/CVE-2024-35114/): IBM Control Center information disclosure (medium 5.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-20529 and fix it if it is affected.

What it is: CVE-2021-20529 is a medium-severity vulnerability in IBM Control Center, published on 19 May 2021. 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-2021-20529 in the wild and no public exploit code.

Affected product: IBM Control Center. 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-2021-20529/ (Markdown: https://insights.sbomify.com/CVE-2021-20529/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-20529
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-20529
- OSV: https://osv.dev/vulnerability/CVE-2021-20529

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-20529/
Summaries are generated and may contain mistakes; the official description above is the record.