MEDIUM
PF in OpenBSD 3.0 with the return-rst rule sets the TTL to 128 in the RST packet, which allows remote attackers to determine if a port is being filtered because the TTL is different than the default TTL
Published Jun 11, 2002
5.0
MEDIUMCVSS 2.0
EPSS 1.97%
Description
PF in OpenBSD 3.0 with the return-rst rule sets the TTL to 128 in the RST packet, which allows remote attackers to determine if a port is being filtered because the TTL is different than the default TTL.
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:P/I:N/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact None
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.97% 0.01970
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01970
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 (14 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.97% (0.01970) | 79.68th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.97% (0.01970) | 77.75th | v5 (v2026.06.15) |
| Mar 30, 2025 | 1.28% (0.01282) | 77.76th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.33% (0.02333) | 74.73th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.28% (0.01282) | 78.22th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.32% (0.00317) | 71.27th | v3 (v2023.03.01) |
| May 11, 2024 | 0.32% (0.00317) | 70.21th | v3 (v2023.03.01) |
| Feb 15, 2024 | 0.67% (0.00673) | 79.22th | v3 (v2023.03.01) |
| Apr 9, 2023 | 0.88% (0.00878) | 80.07th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.43% (0.00427) | 70.38th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.14% (0.01136) | 59.45th | v2 (v2022.01.01) |
| Oct 18, 2022 | 1.14% (0.01136) | 58.28th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.14% (0.01136) | 56.27th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.14% (0.01136) | 34.23th | v2 (v2022.01.01) |
Weaknesses (1)
References (3)
- http://www.iss.net/security_center/static/8738.php vdb-entryx_refsource_XFBroken LinkVendor Advisory
- http://www.securityfocus.com/archive/1/265188 mailing-listx_refsource_BUGTRAQBroken LinkThird Party AdvisoryVDB EntryVendor Advisory
- http://www.securityfocus.com/bid/4401 vdb-entryx_refsource_BIDBroken LinkExploitThird Party AdvisoryVDB EntryVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://www.iss.net/security_center/static/8738.php | vdb-entryx_refsource_XFBroken LinkVendor Advisory | |
| http://www.securityfocus.com/archive/1/265188 | mailing-listx_refsource_BUGTRAQBroken LinkThird Party AdvisoryVDB EntryVendor Advisory | |
| http://www.securityfocus.com/bid/4401 | vdb-entryx_refsource_BIDBroken LinkExploitThird Party AdvisoryVDB EntryVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Jun 11, 2002
Updated Aug 8, 2024
Reserved Jun 7, 2002
Link CVE-2002-0514
CISA Vulnrichment
Updated n/a