CVE-2019-9518
high-risk
Published 2019-08-13
Some HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service. The attacker sends a stream of frames with an empty payload and without the end-of-stream flag. These frames can be DATA, HEADERS, CONTINUATION and/or PUSH_PROMISE. The peer spends time processing each frame disproportionate to attack bandwidth. This can consume excess CPU.
Do I need to act?
~
3.6% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10
High
NETWORK
/ LOW complexity
Affected Products (20)
Affected Vendors
References (54)
Mailing List
http://seclists.org/fulldisclosure/2019/Aug/16
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2925
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2939
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:2955
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:3892
Third Party Advisory
https://access.redhat.com/errata/RHSA-2019:4352
Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0727
Third Party Advisory
https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party...
Third Party Advisory
https://kb.cert.org/vuls/id/605641/
Third Party Advisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10296
and 34 more references
54
/ 100
high-risk
Severity
26/34 · High
Exploitability
7/34 · Low
Exposure
21/34 · High