MEDIUM
ntop: NULL pointer dereference by HTTP Basic Authentication (DoS)
Published Aug 20, 2009
5.0
MEDIUMCVSS 2.0
EPSS 7.27%
Description
The checkHTTPpassword function in http.c in ntop 3.3.10 and earlier allows remote attackers to cause a denial of service (NULL pointer dereference and daemon crash) via an Authorization HTTP header that lacks a : (colon) character in the base64-decoded string.
Affected products
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.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
7.27% 0.07273
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.
EPSS probability 0.07273
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 (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 2, 2026 | 7.27% (0.07273) | 94.17th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.27% (0.07273) | 93.53th | v5 (v2026.06.15) |
| Mar 30, 2025 | 5.01% (0.05006) | 88.72th | v4 (v2025.03.14) |
| Mar 29, 2025 | 9.00% (0.08995) | 87.54th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.01% (0.05006) | 88.98th | v4 (v2025.03.14) |
| Dec 17, 2024 | 5.16% (0.05164) | 92.86th | v3 (v2023.03.01) |
| Dec 12, 2024 | 7.13% (0.07131) | 94.27th | v3 (v2023.03.01) |
| Mar 30, 2024 | 6.31% (0.06309) | 93.47th | v3 (v2023.03.01) |
| Jan 7, 2024 | 5.56% (0.05560) | 92.48th | v3 (v2023.03.01) |
| Mar 7, 2023 | 4.73% (0.04732) | 91.38th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.48% (0.04482) | 88.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.48% (0.04482) | 87.66th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.48% (0.04482) | 71.45th | v2 (v2022.01.01) |
Weaknesses (2)
References (9)
- http://secunia.com/advisories/36403 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:181 vendor-advisoryx_refsource_MANDRIVA
- http://www.securityfocus.com/archive/1/505862/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/archive/1/505876/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.vupen.com/english/advisories/2009/2317 vdb-entryx_refsource_VUPENVendor Advisory
- https://access.redhat.com/security/cve/CVE-2009-2732 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=518264 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2009-2732
- https://www.cve.org/CVERecord?id=CVE-2009-2732
| Link | Providers | Tags |
|---|---|---|
| http://secunia.com/advisories/36403 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://www.mandriva.com/security/advisories?name=MDVSA-2010:181 | vendor-advisoryx_refsource_MANDRIVA | |
| http://www.securityfocus.com/archive/1/505862/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.securityfocus.com/archive/1/505876/100/0/threaded | mailing-listx_refsource_BUGTRAQ | |
| http://www.vupen.com/english/advisories/2009/2317 | vdb-entryx_refsource_VUPENVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2009-2732 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=518264 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2009-2732 | ||
| https://www.cve.org/CVERecord?id=CVE-2009-2732 |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Aug 20, 2009
Updated Aug 7, 2024
Reserved Aug 10, 2009
Link CVE-2009-2732
CISA Vulnrichment
Updated n/a