---
title: "CVE-2020-4030\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2020-4030?format=md
keywords: index, follow
---

# CVE-2020-4030

Publication date 22 June 2020

Last updated 18 August 2025

---

Ubuntu priority

**Medium**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**3.5 · Low**

[Score breakdown](https://ubuntu.com/security/CVE-2020-4030?format=md#impact-score)

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## Description

In FreeRDP before version 2.1.2, there is an out of bounds read in
TrioParse. Logging might bypass string length checks due to an integer
overflow. This is fixed in version 2.1.2.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2020-4030?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| freerdp | 26.04 LTS resolute | Not in release |
| 25.10 questing | Not in release |
| 25.04 plucky | Not in release |
| 24.10 oracular | Not in release |
| 24.04 LTS noble | Not in release |
| 23.10 mantic | Not in release |
| 23.04 lunar | Not in release |
| 22.10 kinetic | Not in release |
| 22.04 LTS jammy | Not in release |
| 21.10 impish | Not in release |
| 21.04 hirsute | Not in release |
| 20.10 groovy | Not in release |
| 20.04 LTS focal | Not in release |
| 19.10 eoan | Not in release |
| 18.04 LTS bionic | Vulnerable |
| 16.04 LTS xenial | Vulnerable |
| 14.04 LTS trusty | Not in release |
| freerdp2 | 26.04 LTS resolute | Not in release |
| 25.10 questing | Not in release |
| 25.04 plucky | Not affected |
| 24.10 oracular | Not affected |
| 24.04 LTS noble | Not affected |
| 23.10 mantic | Not affected |
| 23.04 lunar | Not affected |
| 22.10 kinetic | Not affected |
| 22.04 LTS jammy | Not affected |
| 21.10 impish | Not affected |
| 21.04 hirsute | Not affected |
| 20.10 groovy | Not affected |
| 20.04 LTS focal | Fixed 2.2.0+dfsg1-0ubuntu0.20.04.1 |
| 19.10 eoan | Ignored end of life |
| 18.04 LTS bionic | Fixed 2.2.0+dfsg1-0ubuntu0.18.04.1 |
| 16.04 LTS xenial | Not in release |
| 14.04 LTS trusty | Not in release |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2020-4030?format=md#patch-details)

## Notes

---

### [mdeslaur](https://launchpad.net/~mdeslaur)

The freerdp package in Ubuntu 16.04 LTS and Ubuntu 18.04 LTS
does not build a server library. This is simply a client
denial of service that has a negligible security impact.

### Patch details

For informational purposes only. We recommend not to cherry-pick updates. [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)

| Package | Patch details |
| --- | --- |
| freerdp2 | * Upstream:   [05cd9ea](https://github.com/FreeRDP/FreeRDP/commit/05cd9ea2290d23931f615c1b004d4b2e69074e27) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

3.5 · Low

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | High |
  | Privileges required | Low |
  | User interaction | None |
  | Scope | Changed |
  | Confidentiality impact | None |
  | Integrity impact | Low |
  | Availability impact | None |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 3.5 · Low |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:L/A:N

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-4030)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2020-4030)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2020-4030)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2020-4030)

### Related Ubuntu Security Notices (USN)

+ [USN-4481-1](https://usn.ubuntu.com/USN-4481-1)
+ FreeRDP vulnerabilities
+ 1 September 2020

### Other references

* <https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-fjr5-97f5-qq98>
* <http://www.freerdp.com/2020/06/22/2_1_2-released>
* <https://www.cve.org/CVERecord?id=CVE-2020-4030>