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AUSCERT External Security Bulletin Redistribution
USN-5081-1: Qt vulnerabilities
17 September 2021
AusCERT Security Bulletin Summary
Operating System: Ubuntu
Impact/Access: Denial of Service -- Remote/Unauthenticated
CVE Names: CVE-2021-38593 CVE-2020-17507
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USN-5081-1: Qt vulnerabilities
16 September 2021
Several security issues were fixed in Qt.
o Ubuntu 18.04 LTS
o qtbase-opensource-src - Qt 5 libraries
It was discovered that Qt incorrectly handled certain XBM image files. 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. ( CVE-2020-17507 )
It was discovered that Qt incorrectly handled certain graphics operations.
If a user or automated system were tricked into performing certain graphics
operations, a remote attacker could cause Qt to crash, resulting in a
denial of service. ( CVE-2021-38593 )
The problem can be corrected by updating your system to the following package
o libqt5core5a - 5.9.5+dfsg-0ubuntu2.6
o libqt5gui5 - 5.9.5+dfsg-0ubuntu2.6
After a standard system update you need to restart your session to make all
the necessary changes.
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