Vulnerability Details : 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.
Vulnerability category: Denial of service
Exploit prediction scoring system (EPSS) score for CVE-2019-5599
Probability of exploitation activity in the next 30 days: 4.02%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 92 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2019-5599
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
7.8
|
HIGH | AV:N/AC:L/Au:N/C:N/I:N/A:C |
10.0
|
6.9
|
NIST |
|
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST |
CWE ids for CVE-2019-5599
-
The product allocates a reusable resource or group of resources on behalf of an actor without imposing any restrictions on the size or number of resources that can be allocated, in violation of the intended security policy for that actor.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-5599
-
https://security.FreeBSD.org/advisories/FreeBSD-SA-19:08.rack.asc
Mitigation;Vendor Advisory
-
http://packetstormsecurity.com/files/153378/FreeBSD-Security-Advisory-FreeBSD-SA-19-08.rack.html
FreeBSD Security Advisory - FreeBSD-SA-19:08.rack ≈ Packet StormThird Party Advisory;VDB Entry
-
https://security.netapp.com/advisory/ntap-20190625-0004/
CVE-2019-5599 FreeBSD TCP SACK Vulnerability in NetApp Products | NetApp Product SecurityThird Party Advisory
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http://packetstormsecurity.com/files/153329/Linux-FreeBSD-TCP-Based-Denial-Of-Service.html
Linux / FreeBSD TCP-Based Denial Of Service ≈ Packet StormThird Party Advisory;VDB Entry
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https://support.f5.com/csp/article/K75521003
Third Party Advisory
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https://www.kb.cert.org/vuls/id/905115
VU#905115 - Multiple TCP Selective Acknowledgement (SACK) and Maximum Segment Size (MSS) networking vulnerabilities may cause denial-of-service conditions in Linux and FreeBSD kernelsThird Party Advisory;US Government Resource
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https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-001.md
security-bulletins/2019-001.md at master · Netflix/security-bulletins · GitHubMitigation;Third Party Advisory
-
http://www.openwall.com/lists/oss-security/2019/06/17/5
oss-security - Linux and FreeBSD Kernel: Multiple TCP-based remote denial of service issuesMailing List;Third Party Advisory
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https://seclists.org/bugtraq/2019/Jun/27
Bugtraq: FreeBSD Security Advisory FreeBSD-SA-19:08.rackMailing List;Mitigation;Patch;Third Party Advisory
-
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44193
Pulse Security Advisory: SA44193 - 2019-06: Out-of-Cycle Advisory: Multiple Linux Kernel and FreeBSD vulnerabilitiesThird Party Advisory
Products affected by CVE-2019-5599
- 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:*:*:*:*:*:*