---
title: "CVE-2015-4493\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-2015-4493?format=md
keywords: index, follow
---

# CVE-2015-4493

Publication date 11 August 2015

Last updated 24 July 2024

---

Ubuntu priority

**Medium**

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

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## Description

Heap-based buffer overflow in the stagefright::ESDS::parseESDescriptor
function in libstagefright in Mozilla Firefox before 40.0 and Firefox ESR
38.x before 38.2 allows remote attackers to execute arbitrary code via an
invalid size field in an esds chunk in MPEG-4 video data, a related issue
to CVE-2015-1539.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| firefox | 15.04 vivid | Fixed 40.0+build4-0ubuntu0.15.04.1 |
| 14.04 LTS trusty | Fixed 40.0+build4-0ubuntu0.14.04.1 |
| 12.04 LTS precise | Fixed 40.0+build4-0ubuntu0.12.04.1 |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-4493)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2015-4493)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2015-4493)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2015-4493)

### Related Ubuntu Security Notices (USN)

+ [USN-2702-1](https://usn.ubuntu.com/USN-2702-1)
+ Firefox vulnerabilities
+ 11 August 2015

### Other references

* <https://www.mozilla.org/en-US/security/advisories/mfsa2015-83/>
* <https://www.cve.org/CVERecord?id=CVE-2015-4493>