fwknop before 2.0.3 does not properly validate IP addresses, which allows remote authenticated users to cause a denial of service (server…

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.

Scores

EPSS (exploitation in 30 days)

2.3% · top 16% of all CVEs (2 Nov 2026)

Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 4.0.

Weakness

• n/a
• CWE-20 (opens in a new tab)

Affected products

• n/a

  • affected n/a

References (7)

• fwknop-ipaddress-dos(79568) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
• [oss-security] 20120919 CVE Request -- fwknop 2.0.3: Multiple security issues (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• [oss-security] 20120919 Re: CVE Request -- fwknop 2.0.3: Multiple security issues (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
• http://www.cipherdyne.org/blog/2012/09/software-release-fwknop-2.0.3.html (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://www.cipherdyne.org/cgi-bin/gitweb.cgi?p=fwknop.git%3Ba=commitdiff%3Bh=263fa01f2af1d336961df320f1c7a9ea84ddac9a (opens in a new tab)x_refsource_CONFIRMx_transferred
• http://www.cipherdyne.org/cgi-bin/gitweb.cgi?p=fwknop.git%3Ba=commitdiff%3Bh=f4c16bc47fc24a96b63105556b62d61c1ba7d799 (opens in a new tab)x_refsource_CONFIRMx_transferred
• [oss-security] 20120919 Re: CVE Request -- fwknop 2.0.3: Multiple security issues (opens in a new tab)mailing-listx_refsource_MLISTx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Record last updated 6 Aug 2024, 20:35 UTC.