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CVE-2019-5598

Date: May 15, 2019

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.

Severity Score

Related Resources (9)

https://security.FreeBSD.org/advisories/FreeBSD-SA-19:06.pf.asc
https://security.netapp.com/advisory/ntap-20190611-0001/
http://packetstormsecurity.com/files/152934/FreeBSD-Security-Advisory-FreeBSD-SA-19-06.pf.html
https://nvd.nist.gov/vuln/detail/CVE-2019-5598
https://www.synacktiv.com/posts/systems/icmp-reachable.html
https://security-tracker.debian.org/tracker/CVE-2019-5598
https://www.oracle.com/technetwork/security-advisory/cpujul2019-5072835.html
http://www.securityfocus.com/bid/108395
https://www.mend.io/vulnerability-database/CVE-2019-5598

Severity Score

Weakness Type (CWE)

Input Validation

CWE-20

CVSS v3

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): HIGH
Availability (A): NONE

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): PARTIAL
Availability (A): NONE
Additional information:

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