(RHSA-2020:4690) Moderate: qt5-qtbase and qt5-qtwebsockets security and bug fix update

Qt is a software toolkit for developing applications. The qt5-base packages contain base tools for string, xml, and network handling in Qt.

Security Fix(es):

• qt: XML entity expansion vulnerability (CVE-2015-9541)

• qt5-qtwebsockets: websocket implementation allows only limited size for frames and messages therefore attacker can cause DOS (CVE-2018-21035)

• qt: files placed by attacker can influence the working directory and lead to malicious code execution (CVE-2020-0569)

• qt: files placed by attacker can influence the working directory and lead to malicious code execution (CVE-2020-0570)

• qt5: incorrectly calls SSL_shutdown() in OpenSSL mid-handshake causing denial of service in TLS applications (CVE-2020-13962)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.3 Release Notes linked from the References section.