7.5

CVE-2019-8460

Medienbericht
Exploit
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.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Openbsd ≫ Openbsd Version <= 6.5
Zu dieser CVE wurde keine Warnung gefunden.
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 2.19% 0.801
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
nvd@nist.gov 7.5 3.9 3.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvd@nist.gov 5 10 2.9
AV:N/AC:L/Au:N/C:N/I:N/A:P
CWE-1049 Excessive Data Query Operations in a Large Data Table

The product performs a data query with a large number of joins and sub-queries on a large data table.

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