U.S. flag   An official website of the United States government
Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock (Dot gov) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

CVE-2019-8460 Detail

Description

OpenBSD kernel version <= 6.5 can be forced to create long chains of TCP SACK holes that causes very expensive calls to tcp_sack_option() for every incoming SACK packet which can lead to a denial of service.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to nvd@nist.gov.

Hyperlink Resource
https://ftp.openbsd.org/pub/OpenBSD/patches/6.5/common/006_tcpsack.patch.sig Exploit  Vendor Advisory 
https://github.com/openbsd/src/commit/ed8fdce754a5d8d14c09e989d8877707bd43906f Patch  Third Party Advisory 
https://research.checkpoint.com/tcp-sack-security-issue-in-openbsd-cve-2019-8460/ Exploit  Patch  Press/Media Coverage  Third Party Advisory 
https://security.netapp.com/advisory/ntap-20190905-0001/ Third Party Advisory 
https://us-cert.cisa.gov/ics/advisories/icsa-19-253-03

Weakness Enumeration

CWE-ID CWE Name Source
NVD-CWE-Other Other cwe source acceptance level NIST  
CWE-1049 Excessive Data Query Operations in a Large Data Table Check Point Software Technologies Ltd.  

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

8 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-8460
NVD Published Date:
08/26/2019
NVD Last Modified:
08/02/2021
Source:
Check Point Software Technologies Ltd.