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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

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

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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

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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.