1. Ubuntu Security Notices
  2. USN-4275-1

USN-4275-1: Qt vulnerabilities

Publication date

10 February 2020

Overview

Several security issues were fixed in Qt.

Releases

Packages

Details

It was discovered that Qt incorrectly handled certain PPM images. If a user
or automated system were tricked into opening a specially crafted PPM file,
a remote attacker could cause Qt to crash, resulting in a denial of
service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.
(CVE-2018-19872)

It was discovered that Qt incorrectly handled certain text files. If a user
or automated system were tricked into opening a specially crafted text
file, a remote attacker could cause Qt to crash, resulting in a denial of
service. This issue only affected Ubuntu 19.10. (CVE-2019-18281)

It was discovered that Qt incorrectly searched for plugins in the current
working directory. An attacker could possibly use this issue to execute
arbitrary code. (CVE-2020-0569)

It was discovered that Qt incorrectly searched...

It was discovered that Qt incorrectly handled certain PPM images. If a user
or automated system were tricked into opening a specially crafted PPM file,
a remote attacker could cause Qt to crash, resulting in a denial of
service. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.
(CVE-2018-19872)

It was discovered that Qt incorrectly handled certain text files. If a user
or automated system were tricked into opening a specially crafted text
file, a remote attacker could cause Qt to crash, resulting in a denial of
service. This issue only affected Ubuntu 19.10. (CVE-2019-18281)

It was discovered that Qt incorrectly searched for plugins in the current
working directory. An attacker could possibly use this issue to execute
arbitrary code. (CVE-2020-0569)

It was discovered that Qt incorrectly searched for libraries relative to
the current working directory. An attacker could possibly use this issue to
execute arbitrary code. This issue only affected Ubuntu 19.10.
(CVE-2020-0570)

Update instructions

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

Learn more about how to get the fixes.

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

Ubuntu Release Package Version
19.10 eoan libqt5core5a –  5.12.4+dfsg-4ubuntu1.1
libqt5gui5 –  5.12.4+dfsg-4ubuntu1.1
18.04 bionic libqt5core5a –  5.9.5+dfsg-0ubuntu2.5
libqt5gui5 –  5.9.5+dfsg-0ubuntu2.5
16.04 xenial libqt5core5a –  5.5.1+dfsg-16ubuntu7.7
libqt5gui5 –  5.5.1+dfsg-16ubuntu7.7

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References

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