CVE-2019-5598

Name: CVE-2019-5598
Creator: NVD / NIST
Published: 2019-05-15T16:29:01.08+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

UnknownEPSS 3.34%

Last modified Jun 17, 2026

CVE-2019-5598 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 3.34% chance of exploitation in the next 30 days.

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.

Metrics

EPSS Probability

3.34%

87.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Freebsd	Freebsd	11.2
Freebsd	Freebsd	12.0

References

http://packetstormsecurity.com/files/152934/FreeBSD-Security-Advisory-FreeBSD-SA-19-06.pf.htmlThird Party Advisory, VDB Entry
http://www.securityfocus.com/bid/108395
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:06.pf.ascPatch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20190611-0001/
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
https://www.synacktiv.com/posts/systems/icmp-reachable.htmlThird Party Advisory
http://packetstormsecurity.com/files/152934/FreeBSD-Security-Advisory-FreeBSD-SA-19-06.pf.htmlThird Party Advisory, VDB Entry
http://seclists.org/fulldisclosure/2025/Apr/1
http://www.securityfocus.com/bid/108395
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:06.pf.ascPatch, Vendor Advisory
https://security.netapp.com/advisory/ntap-20190611-0001/
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
https://www.synacktiv.com/posts/systems/icmp-reachable.htmlThird Party Advisory

Timeline

Published: May 15, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-5598?

How severe is CVE-2019-5598?

Severity scoring for CVE-2019-5598 is pending analysis. The EPSS model estimates a 3.34% probability of exploitation in the next 30 days.

How do I fix CVE-2019-5598?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-5598?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST