Description
Some HTTP/2 implementations are vulnerable to a reset flood, potentially leading to a denial of service. The attacker opens a number of streams and sends an invalid request over each stream that should solicit a stream of RST_STREAM frames from the peer. Depending on how the peer queues the RST_STREAM frames, this can consume excess memory, CPU, or both.
Remediation
References
https://kb.cert.org/vuls/id/605641/
https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md
https://seclists.org/bugtraq/2019/Aug/24
http://seclists.org/fulldisclosure/2019/Aug/16
https://www.synology.com/security/advisory/Synology_SA_19_33
https://seclists.org/bugtraq/2019/Aug/31
https://www.debian.org/security/2019/dsa-4503
https://support.f5.com/csp/article/K01988340
http://www.openwall.com/lists/oss-security/2019/08/20/1
https://security.netapp.com/advisory/ntap-20190823-0004/
https://security.netapp.com/advisory/ntap-20190823-0005/
https://security.netapp.com/advisory/ntap-20190823-0001/
http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00076.html
https://seclists.org/bugtraq/2019/Aug/43
https://www.debian.org/security/2019/dsa-4508
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00002.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00011.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00021.html
https://access.redhat.com/errata/RHSA-2019:2682
https://www.debian.org/security/2019/dsa-4520
https://access.redhat.com/errata/RHSA-2019:2726
https://seclists.org/bugtraq/2019/Sep/18
https://access.redhat.com/errata/RHSA-2019:2594
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html
https://access.redhat.com/errata/RHSA-2019:2661
https://kc.mcafee.com/corporate/index?page=content&id=SB10296
https://access.redhat.com/errata/RHSA-2019:2690
https://access.redhat.com/errata/RHSA-2019:2766
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00038.html
https://access.redhat.com/errata/RHSA-2019:2796
https://access.redhat.com/errata/RHSA-2019:2861
https://access.redhat.com/errata/RHSA-2019:2925
https://access.redhat.com/errata/RHSA-2019:2939
https://access.redhat.com/errata/RHSA-2019:2955
https://access.redhat.com/errata/RHSA-2019:2966
https://access.redhat.com/errata/RHSA-2019:3131
https://access.redhat.com/errata/RHSA-2019:2769
https://access.redhat.com/errata/RHSA-2019:3245
https://access.redhat.com/errata/RHSA-2019:3265
https://access.redhat.com/errata/RHSA-2019:3892
https://access.redhat.com/errata/RHSA-2019:3906
https://access.redhat.com/errata/RHSA-2019:4018
https://access.redhat.com/errata/RHSA-2019:4020
https://access.redhat.com/errata/RHSA-2019:4019
https://access.redhat.com/errata/RHSA-2019:4021
https://access.redhat.com/errata/RHSA-2019:4040
https://access.redhat.com/errata/RHSA-2019:4042
https://access.redhat.com/errata/RHSA-2019:4041
https://access.redhat.com/errata/RHSA-2019:4045
https://access.redhat.com/errata/RHSA-2019:4269
https://access.redhat.com/errata/RHSA-2019:4273
https://access.redhat.com/errata/RHSA-2019:4352
https://access.redhat.com/errata/RHSA-2020:0406
https://access.redhat.com/errata/RHSA-2020:0727
https://usn.ubuntu.com/4308-1/
https://www.debian.org/security/2020/dsa-4669
https://lists.debian.org/debian-lts-announce/2020/12/msg00011.html
http://www.openwall.com/lists/oss-security/2023/10/18/8
https://lists.apache.org/thread.html/bde52309316ae798186d783a5e29f4ad1527f61c9219a289d0eee0a7%40%3Cdev.trafficserver.apache.org%3E
https://lists.apache.org/thread.html/392108390cef48af647a2e47b7fd5380e050e35ae8d1aa2030254c04%40%3Cusers.trafficserver.apache.org%3E
https://lists.apache.org/thread.html/ad3d01e767199c1aed8033bb6b3f5bf98c011c7c536f07a5d34b3c19%40%3Cannounce.trafficserver.apache.org%3E
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.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LYO6E3H34C346D2E443GLXK7OK6KIYIQ/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4BBP27PZGSY6OP6D26E5FW4GZKBFHNU7/
https://support.f5.com/csp/article/K01988340?utm_source=f5support&%3Butm_medium=RSS
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