# CVE-2018-8787: Integer overflow in FreeRDP

> An integer overflow in FreeRDP allows remote attackers to cause memory corruption and potentially execute arbitrary code.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 29 Nov 2018
- **Updated:** 16 Sep 2024
- **Also known as:** CLEANSTART-2024-YH10463, DEBIAN-CVE-2018-8787, GHSA-264x-4r27-x5m2, UBUNTU-CVE-2018-8787

## What is CVE-2018-8787?

CVE-2018-8787 is a critical vulnerability in Canonical Ubuntu Linux, published on 29 Nov 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

FreeRDP prior to version 2.0.0-rc4 contains an Integer Overflow that leads to a Heap-Based Buffer Overflow in function gdi_Bitmap_Decompress() and results in a memory corruption and probably even a remote code execution.

Weakness: CWE-787 (Out-of-bounds Write), CWE-190 (Integer Overflow or Wraparound), CWE-680 (Integer Overflow to Buffer Overflow)

## Which versions are affected by CVE-2018-8787?

It affects 9 products.


Products: Canonical Ubuntu Linux, Debian Debian Linux, Freerdp Freerdp, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Eus, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus, Redhat Enterprise Linux Server Tus, Redhat Enterprise Linux Workstation.

## How do I fix CVE-2018-8787?

Upgrade to a fixed version.

## Is CVE-2018-8787 being exploited?

There is no known exploitation of CVE-2018-8787 in the wild and no public exploit code.

## Other vulnerabilities in Canonical Ubuntu Linux

- [CVE-2020-11651](https://insights.sbomify.com/CVE-2020-11651/): SaltStack Salt Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2020-7247](https://insights.sbomify.com/CVE-2020-7247/): OpenSMTPD Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2019-16928](https://insights.sbomify.com/CVE-2019-16928/): Exim Out-of-bounds Write (critical 9.8, exploited in the wild)
- [CVE-2018-6789](https://insights.sbomify.com/CVE-2018-6789/): Exim Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2015-2590](https://insights.sbomify.com/CVE-2015-2590/): Oracle Java SE and Java SE Embedded Remote Code Execution (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-8787 and fix it if it is affected.

What it is: CVE-2018-8787 is a critical vulnerability in Canonical Ubuntu Linux, published on 29 Nov 2018. 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-2018-8787 in the wild and no public exploit code.

Affected product: Canonical Ubuntu Linux. 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-2018-8787/ (Markdown: https://insights.sbomify.com/CVE-2018-8787/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-8787
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-8787
- OSV: https://osv.dev/vulnerability/CVE-2018-8787

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-8787/
Summaries are generated and may contain mistakes; the official description above is the record.