Improper input validation in Freebsd
CVE-2019-5597
In FreeBSD 11.3-PRERELEASE and 12.0-STABLE before r347591, 11.2-RELEASE before 11.2-RELEASE-p10, and 12.0-RELEASE before 12.0-RELEASE-p4, a bug in the pf IPv6 fragment reassembly logic incorrectly uses the last extension header offset from the last received packet instead of the first packet allowing maliciously crafted IPv6 packets to cause a crash or potentially bypass the packet filter.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.036 (88.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.
Affected products
- Freebsd — versions 11.2, 12.0
- N/a Freebsd — versions FreeBSD 11.2 before 11.2-RELEASE-p10 and 12.0 before 12.0-RELEASE-p4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secteam@freebsd.org (Patch, x_refsource_MISC, Vendor Advisory)
- secteam@freebsd.org (Exploit, Third Party Advisory, x_refsource_MISC)
- secteam@freebsd.org (VDB Entry, Third Party Advisory, x_refsource_MISC)
- secteam@freebsd.org (vdb-entry, x_refsource_BID)
- secteam@freebsd.org (x_refsource_CONFIRM)
- secteam@freebsd.org (x_refsource_MISC)
Frequently asked questions
- What is CVE-2019-5597?
- CVE-2019-5597 is a critical-severity vulnerability in Freebsd, classified under Improper Input Validation. CVSS score: 9.1/10. Published 2019-05-15.
- How severe is CVE-2019-5597?
- Critical severity. CVSS v3 base score is 9.1 out of 10.
- Is CVE-2019-5597 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.