Description
src/network/ssl/qsslcertificate.cpp in Nokia Trolltech Qt 4.x does not properly handle a '\0' character in a domain name in the Subject Alternative Name field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.
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 5.0 | qt4-x11 | 4.4.3-1+lenny1 | DSA-1988-1 |
Advisories 1
- DSA-1988-1 qt4-x11 - several vulnerabilities Debian Security (DSA / DLA) · Mar 9, 2026
References
- 36702 third-party-advisory
- 36203 vdb-entry
- http://qt.gitorious.org/qt/qt/commit/802d8c02eaa0aa9cd8d0c6cbd18cd814e6337bc6
- MDVSA-2009:225 vendor-advisory
- USN-829-1 vendor-advisory
- ADV-2009-2499 vdb-entry
- 36536 third-party-advisory