CVE-2019-9518

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.

From the Tenable Blog

Multiple Denial of Service (DoS) Vulnerabilities in HTTP/2 Disclosed (CVE-2019-9511, CVE-2019-9518)

Published: 2019-08-14

A variety of Denial of Service vulnerabilities were found in third-party implementations of HTTP/2.

References

https://www.tenable.com/blog/multiple-denial-of-service-dos-vulnerabilities-in-http2-disclosed-cve-2019-9511-cve-2019-9518

https://www.synology.com/security/advisory/Synology_SA_19_33

https://www.debian.org/security/2019/dsa-4520

https://support.f5.com/csp/article/K46011592?utm_source=f5support&amp%3Butm_medium=RSS

https://support.f5.com/csp/article/K46011592

https://security.netapp.com/advisory/ntap-20190823-0005/

https://seclists.org/bugtraq/2019/Sep/18

https://seclists.org/bugtraq/2019/Aug/24

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CMNFX5MNYRWWIMO4BTKYQCGUDMHO3AXP/

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ZQGHE3WTYLYAYJEIDJVF2FIGQTAYPMC/

https://lists.apache.org/thread.html/rd31230d01fa6aad18bdadc0720acd1747e53690bd35f73a48e7a9b75%40%3Ccommits.cassandra.apache.org%3E

https://lists.apache.org/thread.html/r99a625fb17032646d96cd23dec49603ff630e9318e44a686d63046bc%40%3Ccommits.cassandra.apache.org%3E

https://lists.apache.org/thread.html/ff5b0821a6985159a832ff6d1a4bd311ac07ecc7db1e2d8bab619107%40%3Cdev.trafficserver.apache.org%3E

https://lists.apache.org/thread.html/9317fd092b257a0815434b116a8af8daea6e920b6673f4fd5583d5fe%40%3Ccommits.druid.apache.org%3E

https://lists.apache.org/thread.html/2653c56545573b528f3f6352a29eccaf498bd6fb2a6a59568d81a61d%40%3Cannounce.trafficserver.apache.org%3E

https://lists.apache.org/thread.html/091b518265bce56a16af87b77c8cfacda902a02079e866f9fdf13b61%40%3Cusers.trafficserver.apache.org%3E

https://kc.mcafee.com/corporate/index?page=content&id=SB10296

https://kb.cert.org/vuls/id/605641/

https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md

https://access.redhat.com/errata/RHSA-2020:0727

https://access.redhat.com/errata/RHSA-2019:4352

https://access.redhat.com/errata/RHSA-2019:3892

https://access.redhat.com/errata/RHSA-2019:2955

https://access.redhat.com/errata/RHSA-2019:2939

https://access.redhat.com/errata/RHSA-2019:2925

http://seclists.org/fulldisclosure/2019/Aug/16

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3