---
title: "CVE-2016-1523\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-2016-1523?format=md
keywords: index, follow
---

# CVE-2016-1523

Publication date 8 February 2016

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**6.5 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2016-1523?format=md#impact-score)

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## Description

The SillMap::readFace function in FeatureMap.cpp in Libgraphite in Graphite
2 1.2.4, as used in Mozilla Firefox before 43.0 and Firefox ESR 38.x before
38.6.1, mishandles a return value, which allows remote attackers to cause a
denial of service (missing initialization, NULL pointer dereference, and
application crash) via a crafted Graphite smart font.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| graphite2 | 17.04 zesty | Fixed 1.3.5-1ubuntu1 |
| 16.10 yakkety | Fixed 1.3.5-1ubuntu1 |
| 16.04 LTS xenial | Fixed 1.3.5-1ubuntu1 |
| 15.10 wily | Fixed 1.2.4-3ubuntu1.1 |
| 14.04 LTS trusty | Fixed 1.2.4-1ubuntu1.1 |
| 12.04 LTS precise | Ignored end of life |
| thunderbird | 17.04 zesty | Fixed 1:38.6.0+build1-0ubuntu1 |
| 16.10 yakkety | Fixed 1:38.6.0+build1-0ubuntu1 |
| 16.04 LTS xenial | Fixed 1:38.6.0+build1-0ubuntu1 |
| 15.10 wily | Fixed 1:38.6.0+build1-0ubuntu0.15.10.1 |
| 15.04 vivid | Ignored end of life |
| 14.04 LTS trusty | Fixed 1:38.6.0+build1-0ubuntu0.14.04.1 |
| 12.04 LTS precise | Fixed 1:38.6.0+build1-0ubuntu0.12.04.1 |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)
* [Patch details](https://ubuntu.com/security/CVE-2016-1523?format=md#patch-details)

### 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 |
| --- | --- |
| graphite2 | * Upstream:   [2fc07f8](https://github.com/silnrsi/graphite/commit/2fc07f868146f924621307925b92a5161b7bd571) * Upstream:   [6106dcb](https://github.com/silnrsi/graphite/commit/6106dcbd5bc4df2e6ef6a7c632c69ca71ba2b518) |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

6.5 · Medium

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 6.5 · Medium |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-1523)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2016-1523)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2016-1523)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2016-1523)

### Related Ubuntu Security Notices (USN)

+ [USN-2904-1](https://usn.ubuntu.com/USN-2904-1)
+ Thunderbird vulnerabilities
+ 8 March 2016

+ [USN-2902-1](https://usn.ubuntu.com/USN-2902-1)
+ graphite2 vulnerabilities
+ 17 February 2016

### Other references

* <http://www.talosintel.com/reports/TALOS-2016-0059/>
* <http://blog.talosintel.com/2016/02/vulnerability-spotlight-libgraphite.html>
* <https://www.cve.org/CVERecord?id=CVE-2016-1523>