USN-3297-1: jbig2dec vulnerabilities

24 May 2017

jbig2dec vulnerabilities

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 17.04
  • Ubuntu 16.10
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Several security issues were fixed in jbig2dec.

Software Description

  • jbig2dec - JBIG2 decoder library

Details

Bingchang Liu discovered that jbig2dec incorrectly handled memory when decoding malformed image files. If a user or automated system were tricked into processing a specially crafted JBIG2 image file, a remote attacker could cause jbig2dec to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only applied to Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. (CVE-2016-9601)

It was discovered that jbig2dec incorrectly handled memory when decoding malformed image files. If a user or automated system were tricked into processing a specially crafted JBIG2 image file, a remote attacker could cause jbig2dec to crash, resulting in a denial of service, or possibly disclose sensitive information. (CVE-2017-7885)

Jiaqi Peng discovered that jbig2dec incorrectly handled memory when decoding malformed image files. If a user or automated system were tricked into processing a specially crafted JBIG2 image file, a remote attacker could cause jbig2dec to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2017-7975)

Dai Ge discovered that jbig2dec incorrectly handled memory when decoding malformed image files. If a user or automated system were tricked into processing a specially crafted JBIG2 image file, a remote attacker could cause jbig2dec to crash, resulting in a denial of service, or possibly disclose sensitive information. (CVE-2017-7976)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 17.04
jbig2dec - 0.13-4ubuntu0.1
libjbig2dec0 - 0.13-4ubuntu0.1
Ubuntu 16.10
jbig2dec - 0.13-2ubuntu0.1
libjbig2dec0 - 0.13-2ubuntu0.1
Ubuntu 16.04 LTS
jbig2dec - 0.12+20150918-1ubuntu0.1
libjbig2dec0 - 0.12+20150918-1ubuntu0.1
Ubuntu 14.04 LTS
jbig2dec - 0.11+20120125-1ubuntu1.1
libjbig2dec0 - 0.11+20120125-1ubuntu1.1

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

In general, a standard system update will make all the necessary changes.

References