neon: Improper verification of x509v3 certificate with NULL (zero) byte in certain fields
Published Aug 21, 2009
5.8
MEDIUMCVSS 2.0
EPSS 1.49%
Description
neon before 0.28.6, when OpenSSL or GnuTLS is used, does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) 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.
Configuration 3
- 6.06
- 8.04
- 8.10
- 9.04
Configuration 4
- 10
- 11
No data.
Red Hat Enterprise Linux 4
neon-0:0.24.7-4.el4_8.2
Fixed · RHSA-2009:1452
Red Hat Enterprise Linux 5
neon-0:0.25.5-10.el5_4.1
Fixed · RHSA-2009:1452
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 4 | neon-0:0.24.7-4.el4_8.2 | Fixed | RHSA-2009:1452 |
| Red Hat Enterprise Linux 5 | neon-0:0.25.5-10.el5_4.1 | Fixed | RHSA-2009:1452 |
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:M/Au:N/C:P/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 3, 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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 1.49% (0.01493) | 73.25th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.38% (0.01380) | 68.45th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.43% (0.00426) | 60.20th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.32% (0.00318) | 71.31th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.32% (0.00318) | 69.64th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.32% (0.00318) | 65.70th | 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://lists.apple.com/archives/security-announce/2010//Nov/msg00000.html vendor-advisoryx_refsource_APPLEMailing ListThird Party Advisory
- http://lists.manyfish.co.uk/pipermail/neon/2009-August/001044.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://lists.manyfish.co.uk/pipermail/neon/2009-August/001046.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://secunia.com/advisories/36371 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/36799 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://support.apple.com/kb/HT4435 x_refsource_CONFIRMBroken Link
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:221 vendor-advisoryx_refsource_MANDRIVAThird Party Advisory
- http://www.securityfocus.com/bid/36079 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/usn-835-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.vupen.com/english/advisories/2009/2341 vdb-entryx_refsource_VUPENPermissions Required
- https://access.redhat.com/security/cve/CVE-2009-2474 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=518223 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2009-2474
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11721 vdb-entrysignaturex_refsource_OVALThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2009-2474
- https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00924.html vendor-advisoryx_refsource_FEDORAMailing ListThird Party Advisory
- https://www.redhat.com/archives/fedora-package-announce/2009-August/msg00945.html vendor-advisoryx_refsource_FEDORAMailing ListThird Party Advisory
Change history (0)
No recorded changes yet.