CVE-2019-9515 Detail

Current Description

Some HTTP/2 implementations are vulnerable to a settings flood, potentially leading to a denial of service. The attacker sends a stream of SETTINGS frames to the peer. Since the RFC requires that the peer reply with one acknowledgement per SETTINGS frame, an empty SETTINGS frame is almost equivalent in behavior to a ping. Depending on how efficiently this data is queued, this can consume excess CPU, memory, or both.


View Analysis Description

Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  7.5 HIGH
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Nist CVSS score does not match with CNA score
CNA:  CERT/CC
Base Score:  7.5 HIGH
Vector:  CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00031.html Mailing List  Third Party Advisory 
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00032.html Mailing List  Third Party Advisory 
http://seclists.org/fulldisclosure/2019/Aug/16 Mailing List  Third Party Advisory 
https://access.redhat.com/errata/RHSA-2019:2766 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2019:2796 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2019:2861 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2019:2925 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2019:2939 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2019:2955 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2019:3892 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2019:4018 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2019:4019 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2019:4020 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2019:4021 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2019:4040 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2019:4041 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2019:4042 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2019:4045 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2019:4352 Third Party Advisory 
https://access.redhat.com/errata/RHSA-2020:0727 Third Party Advisory 
https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md Third Party Advisory 
https://kb.cert.org/vuls/id/605641/ Third Party Advisory  US Government Resource 
https://kc.mcafee.com/corporate/index?page=content&id=SB10296 Third Party Advisory 
https://lists.apache.org/thread.html/392108390cef48af647a2e47b7fd5380e050e35ae8d1aa2030254c04@%3Cusers.trafficserver.apache.org%3E Third Party Advisory 
https://lists.apache.org/thread.html/ad3d01e767199c1aed8033bb6b3f5bf98c011c7c536f07a5d34b3c19@%3Cannounce.trafficserver.apache.org%3E Third Party Advisory 
https://lists.apache.org/thread.html/bde52309316ae798186d783a5e29f4ad1527f61c9219a289d0eee0a7@%3Cdev.trafficserver.apache.org%3E Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4ZQGHE3WTYLYAYJEIDJVF2FIGQTAYPMC/ Mailing List  Third Party Advisory 
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CMNFX5MNYRWWIMO4BTKYQCGUDMHO3AXP/ Mailing List  Third Party Advisory 
https://seclists.org/bugtraq/2019/Aug/24 Mailing List  Third Party Advisory 
https://seclists.org/bugtraq/2019/Aug/43 Mailing List  Third Party Advisory 
https://seclists.org/bugtraq/2019/Sep/18 Mailing List  Third Party Advisory 
https://security.netapp.com/advisory/ntap-20190823-0005/ Third Party Advisory 
https://support.f5.com/csp/article/K50233772 Third Party Advisory 
https://support.f5.com/csp/article/K50233772?utm_source=f5support&utm_medium=RSS Third Party Advisory 
https://usn.ubuntu.com/4308-1/ Third Party Advisory 
https://www.debian.org/security/2019/dsa-4508 Third Party Advisory 
https://www.debian.org/security/2019/dsa-4520 Third Party Advisory 
https://www.synology.com/security/advisory/Synology_SA_19_33 Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-770 Allocation of Resources Without Limits or Throttling cwe source acceptance level NIST  
CWE-400 Uncontrolled Resource Consumption Reference acceptance level CERT/CC  

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Change History

29 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2019-9515
NVD Published Date:
08/13/2019
NVD Last Modified:
10/22/2020
Source:
CERT/CC