Description
The SSL capability for Konqueror in KDE 3.0.2 and earlier does not verify the Basic Constraints for an intermediate CA-signed certificate, which allows remote attackers to spoof the certificates of trusted sites via a man-in-the-middle attack.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 3.0 | kdelibs | 2.2.2-13.woody.2 | DSA-155 |
Advisories 1
- DSA-155 kdelibs - privacy escalation with Konqueror Debian Security (DSA / DLA) · Mar 9, 2026
References
- ssl-ca-certificate-spoofing(9776) vdb-entry
- RHSA-2002:220 vendor-advisory
- 5410 vdb-entry
- http://www.kde.org/info/security/advisory-20020818-1.txt
- 20020812 Re: IE SSL Vulnerability (Konqueror affected too) mailing-list
- CLA-2002:519 vendor-advisory
- RHSA-2002:221 vendor-advisory
- 20020818 KDE Security Advisory: Konqueror SSL vulnerability mailing-list
- DSA-155 vendor-advisory
- MDKSA-2002:058 vendor-advisory