CVE-2019-9517
Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service
- State
- Published
- Severity
- 7.5 High
- Published
- Aug 13, 2019
- Updated
- Aug 4, 2024
- Reserved
- Mar 1, 2019
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.0 | 7.5 High | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | certcc |
Weaknesses
- CWE-400 Uncontrolled Resource Consumption
Affected Products
| Product | Versions |
|---|---|
n/an/a |
|
References
- VU#605641third-party-advisory
- https://github.com/Netflix/security-bulletins/blob/master/advisories/third-party/2019-002.md
- [httpd-announce] 20190814 CVE-2019-9517: mod_http2, DoS attack by exhausting h2 workersmailing-list
- [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.htmlmailing-list
- [oss-security] 20190814 CVE-2019-9517: mod_http2, DoS attack by exhausting h2 workersmailing-list
- [httpd-dev] 20190817 CVE-2019-10097 vs. CHANGEs entrymailing-list
- [httpd-dev] 20190817 Re: CVE-2019-10097 vs. CHANGEs entrymailing-list
- https://www.synology.com/security/advisory/Synology_SA_19_33
- https://support.f5.com/csp/article/K02591030
- https://security.netapp.com/advisory/ntap-20190823-0005/
- https://security.netapp.com/advisory/ntap-20190823-0003/
- FEDORA-2019-5a6a7bc12cvendor-advisory
- FEDORA-2019-6a2980de56vendor-advisory
- DSA-4509vendor-advisory
- 20190826 [SECURITY] [DSA 4509-1] apache2 security updatemailing-list
- USN-4113-1vendor-advisory
- FEDORA-2019-4427fd65bevendor-advisory
- FEDORA-2019-63ba15cc83vendor-advisory
- openSUSE-SU-2019:2051vendor-advisory
- https://security.netapp.com/advisory/ntap-20190905-0003/
- GLSA-201909-04vendor-advisory
- openSUSE-SU-2019:2114vendor-advisory
- openSUSE-SU-2019:2115vendor-advisory
- https://kc.mcafee.com/corporate/index?page=content&id=SB10296
- RHSA-2019:2893vendor-advisory
- RHSA-2019:2925vendor-advisory
- RHSA-2019:2939vendor-advisory
- RHSA-2019:2946vendor-advisory
- RHSA-2019:2950vendor-advisory
- RHSA-2019:2949vendor-advisory
- RHSA-2019:2955vendor-advisory
- https://support.f5.com/csp/article/K02591030?utm_source=f5support&%3Butm_medium=RSS
- https://www.oracle.com/technetwork/security-advisory/cpuoct2019-5072832.html
- RHSA-2019:3933vendor-advisory
- RHSA-2019:3935vendor-advisory
- RHSA-2019:3932vendor-advisory
- [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.htmlmailing-list
- [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.htmlmailing-list
- https://www.oracle.com/security-alerts/cpuapr2020.html
- [httpd-cvs] 20210330 svn commit: r1073139 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/json/mailing-list
- [httpd-cvs] 20210330 svn commit: r1073143 [3/3] - in /websites/staging/httpd/trunk/content: ./ security/mailing-list
- [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.htmlmailing-list
- [httpd-cvs] 20210330 svn commit: r1073139 [12/13] - in /websites/staging/httpd/trunk/content: ./ security/json/mailing-list
- [httpd-cvs] 20210330 svn commit: r1888194 [12/13] - /httpd/site/trunk/content/security/json/mailing-list
- [httpd-cvs] 20210330 svn commit: r1073149 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/mailing-list
- [httpd-cvs] 20210330 svn commit: r1073149 [13/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/mailing-list
- [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.htmlmailing-list
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