CVE-2019-9513

Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service

Description

Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service. The attacker creates multiple request streams and continually shuffles the priority of the streams in a way that causes substantial churn to the priority tree. This can consume excess CPU.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 5.06% Top 15%
Vendor Advisory ubuntu.com Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory debian.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory debian.org Vendor Advisory fedoraproject.org Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory debian.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://kb.cert.org/vuls/id/605641/ third party advisory us government resource
https://usn.ubuntu.com/4099-1/ third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TAZZEVTCN2B4WT6AIBJ7XGYJMBTORJU5/ vendor advisory
https://seclists.org/bugtraq/2019/Aug/40 third party advisory mailing list
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LZLUYPYY3RX4ZJDWZRJIKSULYRJ4PXW7/ vendor advisory
https://www.debian.org/security/2019/dsa-4505 third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CMNFX5MNYRWWIMO4BTKYQCGUDMHO3AXP/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4ZQGHE3WTYLYAYJEIDJVF2FIGQTAYPMC/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JUBYAF6ED3O4XCHQ5C2HYENJLXYXZC4M/ vendor advisory
https://seclists.org/bugtraq/2019/Sep/1 third party advisory mailing list
https://www.debian.org/security/2019/dsa-4511 third party advisory vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/POPAEC4FWL4UU4LDEGPY5NPALU24FFQD/ vendor advisory
https://access.redhat.com/errata/RHSA-2019:2692 third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00035.html vendor advisory mailing list third party advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html vendor advisory mailing list third party advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html vendor advisory mailing list third party advisory
https://access.redhat.com/errata/RHSA-2019:2745 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2019:2746 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2019:2775 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2019:2799 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2019:2925 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2019:2939 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2019:2949 third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00003.html vendor advisory mailing list third party advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00005.html vendor advisory mailing list third party advisory
https://access.redhat.com/errata/RHSA-2019:2955 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2019:2966 third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00014.html vendor advisory mailing list third party advisory
https://access.redhat.com/errata/RHSA-2019:3041 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2019:3933 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2019:3935 third party advisory vendor advisory
https://access.redhat.com/errata/RHSA-2019:3932 third party advisory vendor advisory
https://www.debian.org/security/2020/dsa-4669 third party advisory vendor advisory
https://www.oracle.com/security-alerts/cpuoct2020.html third party advisory
https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md third party advisory
https://www.synology.com/security/advisory/Synology_SA_19_33 third party advisory
https://support.f5.com/csp/article/K02591030 third party advisory
https://security.netapp.com/advisory/ntap-20190823-0002/ third party advisory
https://security.netapp.com/advisory/ntap-20190823-0005/ third party advisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10296 third party advisory
https://support.f5.com/csp/article/K02591030?utm_source=f5support&%3Butm_medium=RSS
https://www.oracle.com/security-alerts/cpujan2021.html third party advisory

Frequently Asked Questions

What is the severity of CVE-2019-9513?
CVE-2019-9513 has been scored as a high severity vulnerability.
How to fix CVE-2019-9513?
To fix CVE-2019-9513, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-9513 being actively exploited in the wild?
It is possible that CVE-2019-9513 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~5% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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