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 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.

• CWE-20

• 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

Published

May 15, 2019

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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