CVE-2019-9513
Some HTTP/2 implementations are vulnerable to resource loops, potentially leading to a denial of service.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 81.6%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 81.56% probability · 100th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-400
- Affected
- apple/swiftnio · apache/traffic server · canonical/ubuntu linux · debian/debian linux · fedoraproject/fedora · synology/skynas · synology/diskstation manager · synology/vs960hd firmware · opensuse/leap · redhat/jboss core services · redhat/jboss enterprise application platform · redhat/openshift service mesh · redhat/quay · redhat/software collections · redhat/enterprise linux · oracle/graalvm · mcafee/web gateway · f5/nginx · oracle/enterprise communications broker · nodejs/node.js
- Source
- cret@cert.org
EPSS 81.6% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00035.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00003.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00005.htmlMailing List, Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00014.htmlMailing List, Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2692Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2745Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2746Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2775Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2799Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2925Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2939Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2949Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2955Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2966Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3041Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3932Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3933Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:3935Third Party Advisory
- https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.mdThird Party Advisory
- https://kb.cert.org/vuls/id/605641/Third Party Advisory, US Government Resource
- https://kc.mcafee.com/corporate/index?page=content&id=SB10296Third Party Advisory
- 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/CMNFX5MNYRWWIMO4BTKYQCGUDMHO3AXP/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JUBYAF6ED3O4XCHQ5C2HYENJLXYXZC4M/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LZLUYPYY3RX4ZJDWZRJIKSULYRJ4PXW7/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/POPAEC4FWL4UU4LDEGPY5NPALU24FFQD/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TAZZEVTCN2B4WT6AIBJ7XGYJMBTORJU5/
- https://seclists.org/bugtraq/2019/Aug/40Mailing List, Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.