# CVE-2020-13534: Privilege escalation in Dream Report

> An attacker can escalate privileges by providing a malicious file to exploit weak COM class identifier permissions in Dream Report.

- **Severity:** Critical 9.3 (`CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Apr 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-gch7-jgp7-3rqr

## What is CVE-2020-13534?

CVE-2020-13534 is a critical vulnerability in Dream Report, published on 9 Apr 2021. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A privilege escalation vulnerability exists in Dream Report 5 R20-2. COM Class Identifiers (CLSID), installed by Dream Report 5 20-2, reference LocalServer32 and InprocServer32 with weak privileges which can lead to privilege escalation when used. An attacker can provide a malicious file to trigger this vulnerability.

Weakness: CWE-276 (Incorrect Default Permissions)

## Which versions are affected by CVE-2020-13534?

It affects 1 product.


Products: Dreamreport Dream Report.

## How do I fix CVE-2020-13534?

No fix has been published for CVE-2020-13534 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-13534 being exploited?

There is no known exploitation of CVE-2020-13534 in the wild and no public exploit code.

## Other vulnerabilities in Dream Report

- [CVE-2020-13532](https://insights.sbomify.com/CVE-2020-13532/): Privilege escalation in Dream Report (critical 9.3)
- [CVE-2020-13533](https://insights.sbomify.com/CVE-2020-13533/): Privilege escalation in Dream Report (critical 9.3)
- [CVE-2011-4039](https://insights.sbomify.com/CVE-2011-4039/): Memory corruption in n/a (critical 9.3)
- [CVE-2011-4038](https://insights.sbomify.com/CVE-2011-4038/): Cross-site scripting in n/a (medium 4.3)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-13534 and fix it if it is affected.

What it is: CVE-2020-13534 is a critical vulnerability in Dream Report, published on 9 Apr 2021. 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-2020-13534 in the wild and no public exploit code.

Affected product: Dream Report. 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-2020-13534/ (Markdown: https://insights.sbomify.com/CVE-2020-13534/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-13534
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-13534
- OSV: https://osv.dev/vulnerability/CVE-2020-13534

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-13534/
Summaries are generated and may contain mistakes; the official description above is the record.