---
title: "CVE-2017-7976\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-2017-7976?format=md
keywords: index, follow
---

# CVE-2017-7976

Publication date 19 April 2017

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**7.1 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2017-7976?format=md#impact-score)

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## Description

Artifex jbig2dec 0.13 allows out-of-bounds writes and reads because of an
integer overflow in the jbig2\_image\_compose function in jbig2\_image.c
during operations on a crafted .jb2 file, leading to a denial of service
(application crash) or disclosure of sensitive information from process
memory.

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| jbig2dec | 21.04 hirsute | Not affected |
| 20.10 groovy | Not affected |
| 20.04 LTS focal | Not affected |
| 19.10 eoan | Not affected |
| 19.04 disco | Not affected |
| 18.10 cosmic | Not affected |
| 18.04 LTS bionic | Not affected |
| 17.10 artful | Not affected |
| 17.04 zesty | Fixed 0.13-4ubuntu0.1 |
| 16.10 yakkety | Fixed 0.13-2ubuntu0.1 |
| 16.04 LTS xenial | Fixed 0.12+20150918-1ubuntu0.1 |
| 14.04 LTS trusty | Fixed 0.11+20120125-1ubuntu1.1 |
| 12.04 LTS precise | Ignored end of life |

---

* [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-2017-7976?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 |
| --- | --- |
| jbig2dec | * Upstream:   <http://git.ghostscript.com/?p=ghostpdl.git;a=commit;h=ed6c5133a1004ce8d38f1b44de85a7186feda95e> |

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.1 · High

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.1 · High |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-7976)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2017-7976)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2017-7976)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2017-7976)

### Related Ubuntu Security Notices (USN)

+ [USN-3297-1](https://usn.ubuntu.com/USN-3297-1)
+ jbig2dec vulnerabilities
+ 24 May 2017

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2017-7976>