KDE Security Advisory: Konqueror SSL vulnerability Original Release Date: 2002-08-18 URL: http://www.kde.org/info/security/advisory-20020818-1.txt 0. References http://online.securityfocus.com/archive/1/286290/2002-07-31/2002-08-06/0 http://online.securityfocus.com/archive/1/287050/2002-08-07/2002-08-13/2 1. Systems affected: All versions of KDE up to and including KDE 3.0.2 2. Overview: KDE's SSL implementation fails to check the basic constraints on certificates and as a result may accept certificates as valid that were signed by an issuer who was not authorized to do so. 3. Impact: Users of Konqueror and other SSL enabled KDE software may fall victim to a malicious man-in-the-middle attack without noticing. In such case the user will be under the impression that there is a secure connection with a trusted site while in fact a different site has been connected to. 4. Solution: Upgrade kdelibs to KDE 3.0.3. A patch for KDE 2.2.2 is available as well for users that are unable to upgrade to KDE 3. 5. Patch: A patch for KDE 2.2.2 is available from ftp://ftp.kde.org/pub/kde/security_patches : 0e0da738b276567e9ee36aa824e86124 post-2.2.2-kdelibs-kssl.diff