The GIF decoder in QtGui in Qt before 5.3 allows remote attackers to cause a denial of service (NULL pointer dereference) via invalid width and height values in a GIF image.

Affected: Ubuntu:14.04:LTS: qt4-x11, Ubuntu:14.04:LTS: qtbase-opensource-src

Wolfgang Schenk discovered that Qt incorrectly handled certain malformed GIF images. If a user or automated system were tricked into opening a specially crafted GIF image, a remote attacker could use this issue to cause Qt to crash, resulting in a denial of service. This issue only applied to Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2014-0190)

Fabian Vogt discovered that Qt incorrectly handled certain malformed BMP images. If a user or automated system were tricked into opening a specially crafted BMP image, a remote attacker could use this issue to cause Qt to crash, resulting in a denial of service. (CVE-2015-0295)

Richard Moore and Fabian Vogt discovered that Qt incorrectly handled certain malformed BMP images. If a user or automated system were tricked into opening a specially crafted BMP image, a remote attacker could use this issue to cause Qt to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2015-1858)

Richard Moore and Fabian Vogt discovered that Qt incorrectly handled certain malformed ICO images. If a user or automated system were tricked into opening a specially crafted ICO image, a remote attacker could use this issue to cause Qt to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2015-1859)

Richard Moore and Fabian Vogt discovered that Qt incorrectly handled certain malformed GIF images. If a user or automated system were tricked into opening a specially crafted GIF image, a remote attack…