CVE-2019-5599

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.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 9.79% Top 10%
Vendor Advisory FreeBSD.org
Affected: n/a FreeBSD
Published at:
Updated at:

References

Link Tags
http://www.openwall.com/lists/oss-security/2019/06/17/5 third party advisory mailing list
https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md third party advisory mitigation
http://packetstormsecurity.com/files/153329/Linux-FreeBSD-TCP-Based-Denial-Of-Service.html vdb entry third party advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:08.rack.asc vendor advisory mitigation
https://www.kb.cert.org/vuls/id/905115 third party advisory us government resource
https://seclists.org/bugtraq/2019/Jun/27 mailing list patch mitigation third party advisory
http://packetstormsecurity.com/files/153378/FreeBSD-Security-Advisory-FreeBSD-SA-19-08.rack.html vdb entry third party advisory
https://support.f5.com/csp/article/K75521003 third party advisory
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44193 third party advisory
https://security.netapp.com/advisory/ntap-20190625-0004/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2019-5599?
CVE-2019-5599 has been scored as a high severity vulnerability.
How to fix CVE-2019-5599?
To fix CVE-2019-5599, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-5599 being actively exploited in the wild?
It is possible that CVE-2019-5599 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~10% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2019-5599?
CVE-2019-5599 affects n/a FreeBSD.
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