QSslSocket in Trolltech Qt 4.3.0 through 4.3.2 does not properly verify SSL certificates, which might make it easier for remote attackers to trick a user into accepting an invalid server certificate for a spoofed service, or trick a service into accepting an invalid client certificate for a user.

Dirk Mueller reported an off by one buffer overflow flaw in the way QT parses certain unicode strings.

To quote Dirk:

Ive found a off-by-one buffer overflow in QUtf8Decoder::toUnicode(). It is not exploitable with Qt 4.x or above because there is an additional QChar(0) being allocated in QString, however it is still a bug there, as the array returned by utf16() etc is no longer terminated properly.

Multiple format string vulnerabilities in (1) qtextedit.cpp, (2) qdatatable.cpp, (3) qsqldatabase.cpp, (4) qsqlindex.cpp, (5) qsqlrecord.cpp, (6) qglobal.cpp, and (7) qsvgdevice.cpp in QTextEdit in Trolltech Qt 3 before 3.3.8 20070727 allow remote attackers to execute arbitrary code via format string specifiers in text used to compose an error message.

Qt before 3.3.4 searches the BUILDPREFIX directory, which could be world-writable, to load shared libraries regardless of the LDLIBRARYPATH environment variable, which allows local users to execute arbitrary programs.

Heap-based buffer overflow in the BMP image format parser for the QT library (qt3) before 3.3.3 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code.

The GIF parser in the QT library (qt3) before 3.3.3 allows remote attackers to cause a denial of service (application crash) via a malformed image file that triggers a null dereference, a different vulnerability than CVE-2004-0692.

The XPM parser in the QT library (qt3) before 3.3.3 allows remote attackers to cause a denial of service (application crash) via a malformed image file that triggers a null dereference, a different vulnerability than CVE-2004-0693.

Trolltech Qt Assistant 1.0 in Trolltech Qt 3.0.3, when loaded from the Designer, opens port 7358 for interprocess communication, which allows remote attackers to open arbitrary HTML pages and cause a denial of service.

Buffer overflow in TrollFTPD 1.26 and earlier allows local users to execute arbitrary code by creating a series of deeply nested directories with long names, then running the ls -R (recursive) command.