Ubuntu Security Notice 1504-1 - It was discovered that Qt did not properly handle wildcard domain names or IP addresses in the Common Name field of X.509 certificates. An attacker could exploit this to perform a man in the middle attack to view sensitive information or alter encrypted communications. This issue only affected Ubuntu 10.04 LTS. A heap-based buffer overflow was discovered in the HarfBuzz module. If a user were tricked into opening a crafted font file in a Qt application, an attacker could cause a denial of service or possibly execute arbitrary code with the privileges of the user invoking the program. Various other issues were also addressed.
38f8026f04706275efcfb7cc11205b775caa2dd43f788cbc9c811568afc13863Gentoo Linux Security Advisory 201206-2 - A buffer overflow in QtGui could result in execution of arbitrary code or Denial of Service. Versions less than 4.7.4-r1 are affected.
3e8fe99c5b4cd12ef5e54050c573dfb17c9be459a9ae7b4a445a8accc9356713Red Hat Security Advisory 2011-1323-01 - Qt is a software toolkit that simplifies the task of writing and maintaining GUI applications for the X Window System. HarfBuzz is an OpenType text shaping engine. A buffer overflow flaw was found in the harfbuzz module in Qt. If a user loaded a specially-crafted font file with an application linked against Qt, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application. A buffer overflow flaw was found in the way Qt handled certain gray-scale image files. If a user loaded a specially-crafted gray-scale image file with an application linked against Qt, it could cause the application to crash or, possibly, execute arbitrary code with the privileges of the user running the application.
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