---
title: "CVE-2017-0855\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-2017-0855?format=md
keywords: index, follow
---

# CVE-2017-0855

Publication date 12 January 2018

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**7.5 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2017-0855?format=md#impact-score)

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## Description

In MPEG4Extractor.cpp, there are several places where functions return
early without cleaning up internal buffers which could lead to memory
leaks. This could lead to remote denial of service of a critical system
process with no additional execution privileges needed. User interaction is
not needed for exploitation. Product: Android. Versions: 5.1.1, 6.0, 6.0.1,
7.0, 7.1.1, 7.1.2, 8.0. Android ID: A-64452857.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| firefox | 19.04 disco | Not affected |
| 18.10 cosmic | Not affected |
| 18.04 LTS bionic | Not affected |
| 17.10 artful | Ignored end of life |
| 17.04 zesty | Ignored end of life |
| 16.04 LTS xenial | Not affected |
| 14.04 LTS trusty | Not in release |
| thunderbird | 19.04 disco | Not affected |
| 18.10 cosmic | Not affected |
| 18.04 LTS bionic | Not affected |
| 17.10 artful | Ignored end of life |
| 17.04 zesty | Ignored end of life |
| 16.04 LTS xenial | Not affected |
| 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)

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.5 · High

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.5 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0855)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2017-0855)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2017-0855)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2017-0855)

### Other references

* <https://source.android.com/security/bulletin/2018-01-01>
* <https://www.cve.org/CVERecord?id=CVE-2017-0855>