Qt: QSslCertificate incorrect verification of SSL certificate with NUL in subjectAltName
Published Sep 2, 2009
4.3
MEDIUMCVSS 2.0
EPSS 0.94%
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.
Affected products
No data.
- 4.0.0
- 4.0.1
- 4.1.0
- 4.1.1
- 4.1.2
- 4.1.3
- 4.1.4
- 4.1.5
- 4.2.0
- 4.2.1
- 4.2.3
- 4.3.0
- 4.3.1
- 4.3.2
- 4.3.3
- 4.3.4
- 4.3.5
- 4.4.0
- 4.4.1
- 4.4.2
- 4.4.3
- 4.5.0
- 4.5.1
- 4.5.2
- 4.5.3
- 4.6.0
- 4.6.0
- 4.6.1
- 4.6.2
- 4.6.3
- 4.6.4
- 4.7.0
- 4.7.1
- 4.7.2
- 4.7.3
- 4.7.4
- 4.7.5
- 4.8.0
- 4.8.1
- 4.8.2
- 4.8.3
- 4.8.4
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of qt and qt4 as shipped with Red Hat Enterprise Linux 3, 4, or 5. Affected code was introduced upstream in version 4.3.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:M/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 4, 2026.
Score over time
2022-2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 4, 2026 | 0.94% (0.00941) | 59.62th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.94% (0.00941) | 56.18th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.25% (0.00250) | 46.30th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.18% (0.00179) | 56.46th | v3 (v2023.03.01) |
| Jun 20, 2024 | 0.18% (0.00179) | 55.31th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.18% (0.00179) | 53.31th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
References (11)
- http://qt.gitorious.org/qt/qt/commit/802d8c02eaa0aa9cd8d0c6cbd18cd814e6337bc6 x_refsource_CONFIRM
- http://secunia.com/advisories/36536 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/36702 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:225 vendor-advisoryx_refsource_MANDRIVA
- http://www.securityfocus.com/bid/36203 vdb-entryx_refsource_BID
- http://www.ubuntu.com/usn/usn-829-1 vendor-advisoryx_refsource_UBUNTU
- http://www.vupen.com/english/advisories/2009/2499 vdb-entryx_refsource_VUPENVendor Advisory
- https://access.redhat.com/security/cve/CVE-2009-2700 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=520435 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2009-2700
- https://www.cve.org/CVERecord?id=CVE-2009-2700
| Link | Providers | Tags |
|---|---|---|
| http://qt.gitorious.org/qt/qt/commit/802d8c02eaa0aa9cd8d0c6cbd18cd814e6337bc6 | x_refsource_CONFIRM | |
| http://secunia.com/advisories/36536 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://secunia.com/advisories/36702 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://www.mandriva.com/security/advisories?name=MDVSA-2009:225 | vendor-advisoryx_refsource_MANDRIVA | |
| http://www.securityfocus.com/bid/36203 | vdb-entryx_refsource_BID | |
| http://www.ubuntu.com/usn/usn-829-1 | vendor-advisoryx_refsource_UBUNTU | |
| http://www.vupen.com/english/advisories/2009/2499 | vdb-entryx_refsource_VUPENVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2009-2700 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=520435 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2009-2700 | ||
| https://www.cve.org/CVERecord?id=CVE-2009-2700 |
Change history (0)
No recorded changes yet.