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Security Database

CVE

CWE

Training

CVE-2019-9517

Published: Aug 13, 2019

Modified: Aug 4, 2024

PUBLISHED

CVSS v3.0

7.5

HIGH

Description

Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service. The attacker opens the HTTP/2 window so the peer can send without constraint; however, they leave the TCP window closed so the peer cannot actually write (many of) the bytes on the wire. The attacker then sends a stream of requests for a large response object. Depending on how the servers queue the responses, this can consume excess memory, CPU, or both.

Vendor	Product	Versions
n/a	n/a	affected `n/a`

Weaknesses (CWE)

CVSS v3.0 Details

CVSS v3.0 Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

References

third-party-advisory

x_refsource_CERT-VN

https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md

x_refsource_MISC

[httpd-announce] 20190814 CVE-2019-9517: mod_http2, DoS attack by exhausting h2 workers

mailing-list

x_refsource_MLIST

[httpd-cvs] 20190815 svn commit: r1048743 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html

mailing-list

x_refsource_MLIST

[oss-security] 20190814 CVE-2019-9517: mod_http2, DoS attack by exhausting h2 workers

mailing-list

x_refsource_MLIST

[httpd-dev] 20190817 CVE-2019-10097 vs. CHANGEs entry

mailing-list

x_refsource_MLIST

[httpd-dev] 20190817 Re: CVE-2019-10097 vs. CHANGEs entry

mailing-list

x_refsource_MLIST

https://www.synology.com/security/advisory/Synology_SA_19_33

x_refsource_CONFIRM

https://support.f5.com/csp/article/K02591030

x_refsource_CONFIRM

https://security.netapp.com/advisory/ntap-20190823-0005/

x_refsource_CONFIRM

https://security.netapp.com/advisory/ntap-20190823-0003/

x_refsource_CONFIRM

FEDORA-2019-5a6a7bc12c

vendor-advisory

x_refsource_FEDORA

FEDORA-2019-6a2980de56

vendor-advisory

x_refsource_FEDORA

vendor-advisory

x_refsource_DEBIAN

20190826 [SECURITY] [DSA 4509-1] apache2 security update

mailing-list

x_refsource_BUGTRAQ

vendor-advisory

x_refsource_UBUNTU

FEDORA-2019-4427fd65be

vendor-advisory

x_refsource_FEDORA

FEDORA-2019-63ba15cc83

vendor-advisory

x_refsource_FEDORA

openSUSE-SU-2019:2051

vendor-advisory

x_refsource_SUSE

https://security.netapp.com/advisory/ntap-20190905-0003/

x_refsource_CONFIRM

vendor-advisory

x_refsource_GENTOO

openSUSE-SU-2019:2114

vendor-advisory

x_refsource_SUSE

openSUSE-SU-2019:2115

vendor-advisory

x_refsource_SUSE

https://kc.mcafee.com/corporate/index?page=content&id=SB10296

x_refsource_CONFIRM

vendor-advisory

x_refsource_REDHAT

vendor-advisory

x_refsource_REDHAT

vendor-advisory

x_refsource_REDHAT

vendor-advisory

x_refsource_REDHAT

vendor-advisory

x_refsource_REDHAT

vendor-advisory

x_refsource_REDHAT

vendor-advisory

x_refsource_REDHAT

https://support.f5.com/csp/article/K02591030?utm_source=f5support&amp%3Butm_medium=RSS

x_refsource_CONFIRM

https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html

x_refsource_MISC

vendor-advisory

x_refsource_REDHAT

vendor-advisory

x_refsource_REDHAT

vendor-advisory

x_refsource_REDHAT

[httpd-cvs] 20200401 svn commit: r1058586 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html

mailing-list

x_refsource_MLIST

[httpd-cvs] 20200401 svn commit: r1058587 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/vulnerabilities-httpd.xml security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html

mailing-list

x_refsource_MLIST

https://www.oracle.com/security-alerts/cpuapr2020.html

x_refsource_MISC

[httpd-cvs] 20210330 svn commit: r1073139 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/json/

mailing-list

x_refsource_MLIST

[httpd-cvs] 20210330 svn commit: r1073143 [3/3] - in /websites/staging/httpd/trunk/content: ./ security/

mailing-list

x_refsource_MLIST

[httpd-cvs] 20210330 svn commit: r1073140 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html

mailing-list

x_refsource_MLIST

[httpd-cvs] 20210330 svn commit: r1073139 [12/13] - in /websites/staging/httpd/trunk/content: ./ security/json/

mailing-list

x_refsource_MLIST

[httpd-cvs] 20210330 svn commit: r1888194 [12/13] - /httpd/site/trunk/content/security/json/

mailing-list

x_refsource_MLIST

[httpd-cvs] 20210330 svn commit: r1073149 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/

mailing-list

x_refsource_MLIST

[httpd-cvs] 20210330 svn commit: r1073149 [13/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/

mailing-list

x_refsource_MLIST

[httpd-cvs] 20210606 svn commit: r1075470 [4/4] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2020-13938.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html

mailing-list

x_refsource_MLIST

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