High severity · published Aug 13, 2019
CVE-2019-9518
Some HTTP/2 implementations are vulnerable to a flood of empty frames, potentially leading to a denial of service
7.5
CVSS
25.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)25.4% · higher than 98% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
9.0; 10.0 · source: NVD
DM
Diskstation Manager · Synology
6.2 · source: NVD
EL
Enterprise Linux · Redhat
8.0 · source: NVD
FE
Fedora · Fedoraproject
29; 30 · source: NVD
GR
Graalvm · Oracle
19.2.0 · source: NVD
JC
Jboss Core Services · Redhat
1.0 · source: NVD
JE
Jboss Enterprise Application Platform · Redhat
7.2.0; 7.3.0 · source: NVD
LE
Leap · Opensuse
15.0; 15.1 · source: NVD
NO
Node.js · Nodejs
8.0.0 through 8.8.1; 8.9.0 before 8.16.1; 10.0.0 through 10.12.0; 10.13.0 before 10.16.3; 12.0.0 before 12.8.1 · source: NVD
OS
Openshift Service Mesh · Redhat
1.0 · source: NVD
QU
Quay · Redhat
3.0.0 · source: NVD
SK
Skynas · Synology
All versions, or not specified · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-9518
CVE.org
https://www.cve.org/CVERecord?id=CVE-2019-9518
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html
Mailing List
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html
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
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