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Re: CVE: Input validation failure affecting multiple KDE applications, as well as many other Qt-based applications
From: "Steven M. Christey" <coley () rcf-smtp mitre org>
Date: Wed, 27 Jul 2011 16:57:32 -0400 (EDT)


On Mon, 25 Jul 2011, Jeff Mitchell wrote:

The Arora and Rekonq web browsers are also vulnerable to the same attack
vector, and other Qt-based programs may be as well. We're working with
the Qt team to help enhance their documentation to warn developers to
take care sanitizing their inputs, but it's not actually a Qt flaw. So
we're a bit unsure how to proceed here.

This sounds like a limitation of the Qt API, which can be avoided by programmers who are aware of the limitation. Kind of like how strcpy() can be subject to buffer overflows, *if* the programmer isn't careful. Also happened with confusing return values from certain OpenSSL API functions a couple years ago. (The PHP_SELF example is similar.) So, this should probably get separate CVEs for each application/library that misuses the relevant function(s).

If Qt itself contains misuse of its own functions - which happens sometimes (CVE-2008-5077 for OpenSSL) - then Qt might need its own CVE, too.

- Steve


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