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CVE

CVE-2019-8460

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 s...
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CVE

CVE-2019-8460

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 s...

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

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
C
H
U
-

Related Resources

No items found.

References

https://research.checkpoint.com/tcp-sack-security-issue-in-openbsd-cve-2019-8460/, https://ftp.openbsd.org/pub/OpenBSD/patches/6.5/common/006tcpsack.patch.sig, https://github.com/openbsd/src/commit/ed8fdce754a5d8d14c09e989d8877707bd43906f, https://research.checkpoint.com/tcp-sack-security-issue-in-openbsd-cve-2019-8460/, https://security.netapp.com/advisory/ntap-20190905-0001/, https://us-cert.cisa.gov/ics/advisories/icsa-19-253-03, https://github.com/openbsd/src/commit/ed8fdce754a5d8d14c09e989d8877707bd43906f, https://research.checkpoint.com/tcp-sack-security-issue-in-openbsd-cve-2019-8460/, https://ftp.openbsd.org/pub/OpenBSD/patches/6.5/common/006tcpsack.patch.sig, https://research.checkpoint.com/tcp-sack-security-issue-in-openbsd-cve-2019-8460/

Severity

7.5

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.5
EPSS Probability
0.00688%
EPSS Percentile
0.71424%
Introduced Version
0
Fix Available
ed8fdce754a5d8d14c09e989d8877707bd43906f

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