security flaw
Published Aug 5, 2003
5.0
MEDIUMCVSS 2.0
EPSS 1.92%
Description
The connection tracking core of Netfilter for Linux 2.4.20, with CONFIG_IP_NF_CONNTRACK enabled or the ip_conntrack module loaded, allows remote attackers to cause a denial of service (resource consumption) due to an inconsistency with Linux 2.4.20's support of linked lists, which causes Netfilter to fail to identify connections with an UNCONFIRMED status and use large timeouts.
Affected products
No data.
- 2.4.20
No data.
No Red Hat product state for this CVE.
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:N/I:N/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 1, 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 1, 2026 | 1.92% (0.01922) | 79.18th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.92% (0.01922) | 77.19th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.66% (0.00655) | 69.28th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.27% (0.00265) | 66.66th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.27% (0.00265) | 65.23th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.27% (0.00265) | 62.36th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.05% (0.01055) | 52.13th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.05% (0.01055) | 50.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.05% (0.01055) | 48.43th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.05% (0.01055) | 27.52th | v2 (v2022.01.01) |
No CWE recorded.
References (6)
- http://marc.info/?l=bugtraq&m=105986028426824&w=2 mailing-listx_refsource_BUGTRAQ
- https://access.redhat.com/security/cve/CVE-2003-0187 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1616994 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2003-0187
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A260 vdb-entrysignaturex_refsource_OVAL
- https://www.cve.org/CVERecord?id=CVE-2003-0187
| Link | Providers | Tags |
|---|---|---|
| http://marc.info/?l=bugtraq&m=105986028426824&w=2 | mailing-listx_refsource_BUGTRAQ | |
| https://access.redhat.com/security/cve/CVE-2003-0187 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1616994 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2003-0187 | ||
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A260 | vdb-entrysignaturex_refsource_OVAL | |
| https://www.cve.org/CVERecord?id=CVE-2003-0187 |
Change history (0)
No recorded changes yet.