MEDIUM
fwknop before 2.0.3 does not properly validate IP addresses, which allows remote authenticated users to cause a denial of service (server crash) via a long IP address
Published Oct 22, 2012
4.0
MEDIUMCVSS 2.0
EPSS 2.33%
Description
fwknop before 2.0.3 does not properly validate IP addresses, which allows remote authenticated users to cause a denial of service (server crash) via a long IP address.
Affected products
No data.
OR
- ≤ 2.0.2
- 2.0
- 2.0.1
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.
4.0 MEDIUM NVD
AV:N/AC:L/Au:S/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication Single
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.
2.33% 0.02329
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.02329
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 1, 2026 | 2.33% (0.02329) | 82.90th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.33% (0.02329) | 81.23th | v5 (v2026.06.15) |
| Mar 17, 2025 | 1.25% (0.01251) | 77.97th | v4 (v2025.03.14) |
| Dec 17, 2024 | 14.56% (0.14565) | 95.73th | v3 (v2023.03.01) |
| Nov 8, 2023 | 11.70% (0.11699) | 94.72th | v3 (v2023.03.01) |
| Jul 10, 2023 | 1.13% (0.01130) | 82.69th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.95% (0.00954) | 80.85th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.23% (0.01232) | 67.28th | v2 (v2022.01.01) |
| Dec 23, 2022 | 1.23% (0.01232) | 66.86th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.23% (0.01232) | 64.85th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.23% (0.01232) | 41.02th | v2 (v2022.01.01) |
Weaknesses (1)
References (7)
- http://www.cipherdyne.org/blog/2012/09/software-release-fwknop-2.0.3.html x_refsource_CONFIRMVendor Advisory
- http://www.cipherdyne.org/cgi-bin/gitweb.cgi?p=fwknop.git%3Ba=commitdiff%3Bh=263fa01f2af1d336961df320f1c7a9ea84ddac9a x_refsource_CONFIRM
- http://www.cipherdyne.org/cgi-bin/gitweb.cgi?p=fwknop.git%3Ba=commitdiff%3Bh=f4c16bc47fc24a96b63105556b62d61c1ba7d799 x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2012/09/19/2 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2012/09/20/2 mailing-listx_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2012/09/20/4 mailing-listx_refsource_MLIST
- https://exchange.xforce.ibmcloud.com/vulnerabilities/79568 vdb-entryx_refsource_XF
| Link | Providers | Tags |
|---|---|---|
| http://www.cipherdyne.org/blog/2012/09/software-release-fwknop-2.0.3.html | x_refsource_CONFIRMVendor Advisory | |
| http://www.cipherdyne.org/cgi-bin/gitweb.cgi?p=fwknop.git%3Ba=commitdiff%3Bh=263fa01f2af1d336961df320f1c7a9ea84ddac9a | x_refsource_CONFIRM | |
| http://www.cipherdyne.org/cgi-bin/gitweb.cgi?p=fwknop.git%3Ba=commitdiff%3Bh=f4c16bc47fc24a96b63105556b62d61c1ba7d799 | x_refsource_CONFIRM | |
| http://www.openwall.com/lists/oss-security/2012/09/19/2 | mailing-listx_refsource_MLIST | |
| http://www.openwall.com/lists/oss-security/2012/09/20/2 | mailing-listx_refsource_MLIST | |
| http://www.openwall.com/lists/oss-security/2012/09/20/4 | mailing-listx_refsource_MLIST | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/79568 | vdb-entryx_refsource_XF |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Oct 22, 2012
Updated Aug 6, 2024
Reserved Aug 21, 2012
Link CVE-2012-4435
CISA Vulnrichment
Updated n/a