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CVE-2019-9518

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Date: August 13, 2019

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.

Language: Java

Severity Score

Related Resources (33)

https://lists.apache.org/thread.html/r99a625fb17032646d96cd23dec49603ff630e9318e44a686d63046bc@%3Ccommits.cassandra.apache.org%3E
https://access.redhat.com/errata/RHSA-2019:3892
https://support.f5.com/csp/article/K46011592?utm_source=f5support&utm_medium=RSS
https://kc.mcafee.com/corporate/index?page=content&id=SB10296
https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md
https://security-tracker.debian.org/tracker/CVE-2019-9518
http://seclists.org/fulldisclosure/2019/Aug/16
https://lists.apache.org/thread.html/ff5b0821a6985159a832ff6d1a4bd311ac07ecc7db1e2d8bab619107@%3Cdev.trafficserver.apache.org%3E
https://www.debian.org/security/2019/dsa-4520
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html
https://lists.apache.org/thread.html/9317fd092b257a0815434b116a8af8daea6e920b6673f4fd5583d5fe@%3Ccommits.druid.apache.org%3E
https://access.redhat.com/errata/RHSA-2019:2955
https://access.redhat.com/errata/RHSA-2019:2939
https://lists.apache.org/thread.html/rd31230d01fa6aad18bdadc0720acd1747e53690bd35f73a48e7a9b75@%3Ccommits.cassandra.apache.org%3E
https://support.f5.com/csp/article/K46011592
https://people.canonical.com/~ubuntu-security/cve/CVE-2019-9518
https://seclists.org/bugtraq/2019/Aug/24
https://seclists.org/bugtraq/2019/Sep/18
https://nvd.nist.gov/vuln/detail/CVE-2019-9518
https://security.netapp.com/advisory/ntap-20190823-0005/
https://access.redhat.com/errata/RHSA-2019:4352
https://access.redhat.com/security/cve/CVE-2019-9518
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4ZQGHE3WTYLYAYJEIDJVF2FIGQTAYPMC/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CMNFX5MNYRWWIMO4BTKYQCGUDMHO3AXP/
https://lists.apache.org/thread.html/2653c56545573b528f3f6352a29eccaf498bd6fb2a6a59568d81a61d@%3Cannounce.trafficserver.apache.org%3E
https://access.redhat.com/errata/RHSA-2020:0727
https://security.alpinelinux.org/vuln/CVE-2019-9518
https://lists.apache.org/thread.html/091b518265bce56a16af87b77c8cfacda902a02079e866f9fdf13b61@%3Cusers.trafficserver.apache.org%3E
https://kb.cert.org/vuls/id/605641/
https://www.synology.com/security/advisory/Synology_SA_19_33
https://access.redhat.com/errata/RHSA-2019:2925
https://www.mend.io/vulnerability-database/CVE-2019-9518

Severity Score

Weakness Type (CWE)

Uncontrolled Resource Consumption ('Resource Exhaustion')

CWE-400

Allocation of Resources Without Limits or Throttling

CWE-770

Top Fix

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): LOW
Authentication (AU): NONE
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): COMPLETE
Additional information:

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