Resource exhaustion in FreeBSD
CVE-2019-5599
In FreeBSD 12.0-STABLE before r349197 and 12.0-RELEASE before 12.0-RELEASE-p6, a bug in the non-default RACK TCP stack can allow an attacker to cause several linked lists to grow unbounded and cause an expensive list traversal on every packet being processed, leading to resource exhaustion and a denial of service.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.051 (92.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 92.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.051 · newest: 0.051 · change: 0.000
Affected products
- FreeBSD — versions 12.0
- FreeBSD — versions FreeBSD 12.0 before 12.0-RELEASE-p6
Weakness classification (CWE)
References
- www.openwall.com/lists/oss-security/2019/06/17/5 (mailing-list, Mailing List, Third Party Advisory)
- github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-0… (Third Party Advisory, Mitigation)
- packetstormsecurity.com/files/153329/Linux-FreeBSD-TCP-Based-Denial-Of-Service… (VDB Entry, Third Party Advisory)
- security.FreeBSD.org/advisories/FreeBSD-SA-19:08.rack.asc (vendor-advisory, Mitigation, Vendor Advisory)
- www.kb.cert.org/vuls/id/905115 (US Government Resource, Third Party Advisory, third-party-advisory)
- seclists.org/bugtraq/2019/Jun/27 (mailing-list, Patch, Mailing List, Third Party Advisory, Mitigation)
- packetstormsecurity.com/files/153378/FreeBSD-Security-Advisory-FreeBSD-SA-19-08… (VDB Entry, Third Party Advisory)
- support.f5.com/csp/article/K75521003 (Third Party Advisory)
- kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44193 (Third Party Advisory)
- security.netapp.com/advisory/ntap-20190625-0004/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2019-5599?
- CVE-2019-5599 is a high-severity vulnerability in FreeBSD, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2019-07-02.
- How severe is CVE-2019-5599?
- High severity. CVSS v3 base score is 7.5 out of 10.