gnutls: incorrect verification of SSL certificate with NUL in name (GNUTLS-SA-2009-4)
Published Aug 12, 2009
7.5
HIGHCVSS 2.0
EPSS 2.15%
Description
libgnutls in GnuTLS before 2.8.2 does not properly handle a '\0' character in a domain name in the subject's (1) Common Name (CN) or (2) Subject Alternative Name (SAN) 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.
Affected products
No data.
- ≤ 2.8.1
- 1.0.16
- 1.0.17
- 1.0.18
- 1.0.19
- 1.0.20
- 1.0.21
- 1.0.22
- 1.0.23
- 1.0.24
- 1.0.25
- 1.1.13
- 1.1.14
- 1.1.15
- 1.1.16
- 1.1.17
- 1.1.18
- 1.1.19
- 1.1.20
- 1.1.21
- 1.1.22
- 1.1.23
- 1.2.0
- 1.2.1
- 1.2.2
- 1.2.3
- 1.2.4
- 1.2.5
- 1.2.6
- 1.2.7
- 1.2.8
- 1.2.8.1a1
- 1.2.9
- 1.2.10
- 1.2.11
- 1.3.0
- 1.3.1
- 1.3.2
- 1.3.3
- 1.3.4
- 1.3.5
- 1.4.0
- 1.4.1
- 1.4.2
- 1.4.3
- 1.4.4
- 1.4.5
- 1.5.0
- 1.5.1
- 1.5.2
- 1.5.3
- 1.5.4
- 1.5.5
- 1.6.0
- 1.6.1
- 1.6.2
- 1.6.3
- 1.7.0
- 1.7.1
- 1.7.2
- 1.7.3
- 1.7.4
- 1.7.5
- 1.7.6
- 1.7.7
- 1.7.8
- 1.7.9
- 1.7.10
- 1.7.11
- 1.7.12
- 1.7.13
- 1.7.14
- 1.7.15
- 1.7.16
- 1.7.17
- 1.7.18
- 1.7.19
- 2.0.0
- 2.0.1
- 2.0.2
- 2.0.3
- 2.0.4
- 2.1.0
- 2.1.1
- 2.1.2
- 2.1.3
- 2.1.4
- 2.1.5
- 2.1.6
- 2.1.7
- 2.1.8
- 2.2.0
- 2.2.1
- 2.2.2
- 2.2.3
- 2.2.4
- 2.2.5
- 2.3.0
- 2.3.1
- 2.3.2
- 2.3.3
- 2.3.4
- 2.3.5
- 2.3.6
- 2.3.7
- 2.3.8
- 2.3.9
- 2.3.10
- 2.3.11
- 2.4.0
- 2.4.1
- 2.4.2
- 2.5.0
- 2.6.0
- 2.6.1
- 2.6.2
- 2.6.3
- 2.6.4
- 2.6.5
- 2.6.6
- 2.8.0
No data.
Red Hat Enterprise Linux 4
gnutls-0:1.0.20-4.el4_8.3
Fixed · RHSA-2009:1232
Red Hat Enterprise Linux 5
gnutls-0:1.4.1-3.el5_3.5
Fixed · RHSA-2009:1232
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | gnutls-0:1.0.20-4.el4_8.3 | Fixed | RHSA-2009:1232 |
| Red Hat Enterprise Linux 5 | gnutls-0:1.4.1-3.el5_3.5 | Fixed | RHSA-2009:1232 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
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:L/Au:N/C:P/I:P/A:P
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 2, 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 (11 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 2.15% (0.02151) | 81.49th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.15% (0.02151) | 79.70th | v5 (v2026.06.15) |
| Mar 30, 2025 | 2.70% (0.02695) | 84.56th | v4 (v2025.03.14) |
| Mar 29, 2025 | 6.39% (0.06393) | 84.59th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.70% (0.02695) | 84.88th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.17% (0.00168) | 55.11th | v3 (v2023.03.01) |
| Jul 10, 2024 | 0.17% (0.00168) | 54.05th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.17% (0.00168) | 52.00th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.69% (0.02686) | 82.85th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.69% (0.02686) | 81.17th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.69% (0.02686) | 62.66th | v2 (v2022.01.01) |
References (17)
- http://article.gmane.org/gmane.network.gnutls.general/1733 x_refsource_CONFIRMVendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2009-09/msg00001.html vendor-advisoryx_refsource_SUSE
- http://secunia.com/advisories/36266 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/36496 third-party-advisoryx_refsource_SECUNIA
- http://www.openwall.com/lists/oss-security/2009/08/14/6 mailing-listx_refsource_MLIST
- http://www.redhat.com/support/errata/RHSA-2009-1232.html vendor-advisoryx_refsource_REDHAT
- http://www.securityfocus.com/archive/1/507985/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securitytracker.com/id?1022777 vdb-entryx_refsource_SECTRACK
- http://www.vmware.com/security/advisories/VMSA-2009-0016.html x_refsource_CONFIRM
- https://access.redhat.com/security/cve/CVE-2009-2730 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=516231 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/52404 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2009-2730
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10778 vdb-entrysignaturex_refsource_OVAL
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A8409 vdb-entrysignaturex_refsource_OVAL
- https://rhn.redhat.com/errata/RHSA-2010-0095.html vendor-advisoryx_refsource_REDHAT
- https://www.cve.org/CVERecord?id=CVE-2009-2730
Change history (0)
No recorded changes yet.