USN-4003-1: Qt vulnerabilities

3 June 2019

qtbase-opensource-src vulnerabilities

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

  • Ubuntu 18.10
  • Ubuntu 18.04 LTS
  • Ubuntu 16.04 LTS

Summary

Several security issues were fixed in Qt.

Software Description

  • qtbase-opensource-src - Qt 5 libraries

Details

It was discovered that Qt incorrectly handled certain XML documents. A remote attacker could use this issue with a specially crafted XML document to cause Qt to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2018-15518)

It was discovered that Qt incorrectly handled certain GIF images. A remote attacker could use this issue with a specially crafted GIF image to cause Qt to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2018-19870)

It was discovered that Qt incorrectly handled certain BMP images. A remote attacker could use this issue with a specially crafted BMP image to cause Qt to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2018-19873)

Update instructions

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

Ubuntu 18.10
libqt5core5a - 5.11.1+dfsg-7ubuntu3.1
libqt5gui5 - 5.11.1+dfsg-7ubuntu3.1
Ubuntu 18.04 LTS
libqt5core5a - 5.9.5+dfsg-0ubuntu2.1
libqt5gui5 - 5.9.5+dfsg-0ubuntu2.1
Ubuntu 16.04 LTS
libqt5core5a - 5.5.1+dfsg-16ubuntu7.6
libqt5gui5 - 5.5.1+dfsg-16ubuntu7.6

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

After a standard system update you need to restart yoursession to make all the necessary changes.

References