7.5
HIGH
CVE-2019-5599
FreeBSD RACK TCP Stack Unbounded List Traversal Denial of Service Vulnerability
Description

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.

INFO

Published Date :

July 2, 2019, 9:15 p.m.

Last Modified :

Aug. 24, 2020, 5:37 p.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2019-5599 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Freebsd freebsd
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2019-5599.

URL Resource
http://packetstormsecurity.com/files/153329/Linux-FreeBSD-TCP-Based-Denial-Of-Service.html Third Party Advisory VDB Entry
http://packetstormsecurity.com/files/153378/FreeBSD-Security-Advisory-FreeBSD-SA-19-08.rack.html Third Party Advisory VDB Entry
http://www.openwall.com/lists/oss-security/2019/06/17/5 Mailing List Third Party Advisory
https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md Mitigation Third Party Advisory
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44193 Third Party Advisory
https://seclists.org/bugtraq/2019/Jun/27 Mailing List Mitigation Patch Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:08.rack.asc Mitigation Vendor Advisory
https://security.netapp.com/advisory/ntap-20190625-0004/ Third Party Advisory
https://support.f5.com/csp/article/K75521003 Third Party Advisory
https://www.kb.cert.org/vuls/id/905115 Third Party Advisory US Government Resource

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2019-5599 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-5599 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CWE Remap by [email protected]

    Aug. 24, 2020

    Action Type Old Value New Value
    Changed CWE CWE-400 CWE-770
  • Initial Analysis by [email protected]

    Jul. 15, 2019

    Action Type Old Value New Value
    Added CVSS V2 (AV:N/AC:L/Au:N/C:N/I:N/A:C)
    Added CVSS V3 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
    Changed Reference Type http://packetstormsecurity.com/files/153329/Linux-FreeBSD-TCP-Based-Denial-Of-Service.html No Types Assigned http://packetstormsecurity.com/files/153329/Linux-FreeBSD-TCP-Based-Denial-Of-Service.html Third Party Advisory, VDB Entry
    Changed Reference Type http://packetstormsecurity.com/files/153378/FreeBSD-Security-Advisory-FreeBSD-SA-19-08.rack.html No Types Assigned http://packetstormsecurity.com/files/153378/FreeBSD-Security-Advisory-FreeBSD-SA-19-08.rack.html Third Party Advisory, VDB Entry
    Changed Reference Type http://www.openwall.com/lists/oss-security/2019/06/17/5 No Types Assigned http://www.openwall.com/lists/oss-security/2019/06/17/5 Mailing List, Third Party Advisory
    Changed Reference Type https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md No Types Assigned https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md Mitigation, Third Party Advisory
    Changed Reference Type https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44193 No Types Assigned https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44193 Third Party Advisory
    Changed Reference Type https://seclists.org/bugtraq/2019/Jun/27 No Types Assigned https://seclists.org/bugtraq/2019/Jun/27 Mailing List, Mitigation, Patch, Third Party Advisory
    Changed Reference Type https://security.FreeBSD.org/advisories/FreeBSD-SA-19:08.rack.asc No Types Assigned https://security.FreeBSD.org/advisories/FreeBSD-SA-19:08.rack.asc Mitigation, Vendor Advisory
    Changed Reference Type https://security.netapp.com/advisory/ntap-20190625-0004/ No Types Assigned https://security.netapp.com/advisory/ntap-20190625-0004/ Third Party Advisory
    Changed Reference Type https://support.f5.com/csp/article/K75521003 No Types Assigned https://support.f5.com/csp/article/K75521003 Third Party Advisory
    Changed Reference Type https://www.kb.cert.org/vuls/id/905115 No Types Assigned https://www.kb.cert.org/vuls/id/905115 Third Party Advisory, US Government Resource
    Added CWE CWE-400
    Added CPE Configuration OR *cpe:2.3:o:freebsd:freebsd:12.0:-:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:12.0:p1:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:12.0:p2:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:12.0:p3:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:12.0:p4:*:*:*:*:*:* *cpe:2.3:o:freebsd:freebsd:12.0:p5:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2019-5599 is associated with the following CWEs:

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

4.99 }} 0.97%

score

0.92884

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability