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CVE-2019-5598
In FreeBSD 11.3-PRERELEASE before r345378, 12.0-STABLE before r345377, 11.2-RELEASE before 11.2-RELEASE-p10, and 12.0-RELEASE before…
High7.5EPSS 3.3%
- Published
- Updated
- Reserved
- Assigned by
- freebsd
Description
In FreeBSD 11.3-PRERELEASE before r345378, 12.0-STABLE before r345377, 11.2-RELEASE before 11.2-RELEASE-p10, and 12.0-RELEASE before 12.0-RELEASE-p4, a bug in pf does not check if the outer ICMP or ICMP6 packet has the same destination IP as the source IP of the inner protocol packet allowing a maliciously crafted ICMP/ICMP6 packet could bypass the packet filter rules and be passed to a host that would otherwise be unavailable.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
- EPSS (exploitation in 30 days)
- 3.3% · top 11% of all CVEs (6 Nov 2026)
Loading the EPSS history…
The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.5.
Weakness
- Improper Check for Unusual or Exceptional Conditions
- CWE-20 (opens in a new tab)All about CWE-20 and its CVEs
Affected products
FreeBSD
- affected FreeBSD 11.2 before 11.2-RELEASE-p10 and 12.0 before 12.0-RELEASE-p4
References (7)
- https://security.FreeBSD.org/advisories/FreeBSD-SA-19:06.pf.asc (opens in a new tab)x_refsource_MISCx_transferred
- https://www.synacktiv.com/posts/systems/icmp-reachable.html (opens in a new tab)x_refsource_MISCx_transferred
- http://packetstormsecurity.com/files/152934/FreeBSD-Security-Advisory-FreeBSD-SA-19-06.pf.html (opens in a new tab)x_refsource_MISCx_transferred
- 108395 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
- https://security.netapp.com/advisory/ntap-20190611-0001/ (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html (opens in a new tab)x_refsource_MISCx_transferred
- http://seclists.org/fulldisclosure/2025/Apr/1 (opens in a new tab)
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)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2019-5598)Record last updated .