USN-4003-1: Qt vulnerabilities

Releases

• Ubuntu 18.10
• Ubuntu 18.04 ESM
• Ubuntu 16.04 ESM

Packages

• 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

• libqt5core5a - 5.9.5+dfsg-0ubuntu2.1
• libqt5gui5 - 5.9.5+dfsg-0ubuntu2.1

Ubuntu 16.04

• libqt5core5a - 5.5.1+dfsg-16ubuntu7.6
• libqt5gui5 - 5.5.1+dfsg-16ubuntu7.6

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

References

• CVE-2018-15518
• CVE-2018-19870
• CVE-2018-19873