qt5-qtbase: Out-of-bounds access in generateDirectionalRuns() function in qtextengine.cpp

An out-of-bounds memory access in the generateDirectionalRuns() function in qtextengine.cpp in Qt qtbase 5.11.x and 5.12.x before 5.12.5 allows attackers to cause a denial of service by crashing an application via a text file containing many directional characters.

qt5-qtwebsockets: websocket implementation allows only limited size for frames and messages therefore attacker can cause DOS

In Qt through 5.14.1, the WebSocket implementation accepts up to 2GB for frames and 2GB for messages. Smaller limits cannot be configured. This makes it easier for attackers to cause a denial of service (memory consumption).

qt: Malformed PPM image causing division by zero and crash in qppmhandler.cpp

An issue was discovered in Qt 5.11. A malformed PPM image causes a division by zero and a crash in qppmhandler.cpp.

qt5-qtimageformats: QTgaFile CPU exhaustion

An issue was discovered in Qt before 5.11.3. There is QTgaFile Uncontrolled Resource Consumption.

qt5-qtbase: QImage allocation failure in qgifhandler

An issue was discovered in Qt before 5.11.3. A malformed GIF image causes a NULL pointer dereference in QGifHandler resulting in a segmentation fault.

qt5-qtsvg: Invalid parsing of malformed url reference resulting in a denial of service

An issue was discovered in Qt before 5.11.3. A malformed SVG image causes a segmentation fault in qsvghandler.cpp.

A keystroke logging issue was discovered in Virtual Keyboard in Qt 5.7.x, 5.8.x, 5.9.x, 5.10.x, and 5.11.x before 5.11.3.

qt5-qtbase: Double free in QXmlStreamReader

QXmlStream in Qt 5.x before 5.11.3 has a double-free or corruption during parsing of a specially crafted illegal XML document.

qt: XML entity expansion vulnerability

Qt through 5.14 allows an exponential XML entity expansion attack via a crafted SVG document that is mishandled in QXmlStreamReader, a related issue to CVE-2003-1564.

The Google V8 engine, as used in Google Chrome before 44.0.2403.89 and QtWebEngineCore in Qt before 5.5.1, allows remote attackers to cause a denial of service (memory corruption) or execute arbitrary code via a crafted web site.