CVE-2016-8740 The mod_http2 module in the Apache HTTP Server 2.4.17 through 2.4.23, when the Protocols configuration includes h2 or h2c, does not restrict request-header length, which allows remote attackers to cau...
HighCVSS 7.5
EPSS 79.1%
- Published
- Updated
- Exploit status
- No public exploit known
Description
The mod_http2 module in the Apache HTTP Server 2.4.17 through 2.4.23, when the Protocols configuration includes h2 or h2c, does not restrict request-header length, which allows remote attackers to cause a denial of service (memory consumption) via crafted CONTINUATION frames in an HTTP/2 request.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| debian/apache2(Debian:12) | < 2.4.25-1 | 2.4.25-1 |
| debian/apache2(Debian:13) | < 2.4.25-1 | 2.4.25-1 |
| debian/apache2(Debian:14) | < 2.4.25-1 | 2.4.25-1 |
| Apache HTTP Server | = 2.4.17 | No fix listed |
| Apache HTTP Server | = 2.4.18 | No fix listed |
| Apache HTTP Server | = 2.4.19 | No fix listed |
| Apache HTTP Server | = 2.4.20 | No fix listed |
| Apache HTTP Server | = 2.4.21 | No fix listed |
| Apache HTTP Server | = 2.4.22 | No fix listed |
| Apache HTTP Server | = 2.4.23 | No fix listed |
| Apache HTTP Server | = 2.4.17 - 2.4.23 | No fix listed |
References
- Debian Security Tracker CVE-2016-8740 vendor-advisory
- bugs.debian.org issue-tracking
- packetstormsecurity.com exploit third-party-advisory vdb-entry
- RHSA-2017:1415 vendor-advisory
- 94650 third-party-advisory vdb-entry
- 1037388 third-party-advisory vdb-entry
- RHSA-2017:1161 vendor-advisory
- RHSA-2017:1413 vendor-advisory
- RHSA-2017:1414 vendor-advisory
- github.com issue-tracking patch third-party-advisory
- h20566.www2.hpe.com
- [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
- [httpd-cvs] 20190815 svn commit: r1048742 [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
- [httpd-cvs] 20210330 svn commit: r1073139 [10/13] - in /websites/staging/httpd/trunk/content: ./ security/json/ mailing-list
- [httpd-cvs] 20210606 svn commit: r1075467 [2/2] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2021-31618.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html 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.html 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 [10/13] - in /websites/staging/httpd/trunk/content: ./ security/ security/json/ 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.html mailing-list
- [httpd-cvs] 20210330 svn commit: r1073146 [3/3] - in /websites/staging/httpd/trunk/content: ./ security/cvejsontohtml.py security/vulnerabilities-httpd.xml security/vulnerabilities_22.html security/vulnerabilities_24.html mailing-list
- [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
- [httpd-cvs] 20210603 svn commit: r1075360 [3/3] - in /websites/staging/httpd/trunk/content: ./ security/json/CVE-2021-31618.json security/vulnerabilities_13.html security/vulnerabilities_20.html security/vulnerabilities_22.html security/vulnerabilities_24.html mailing-list
- [httpd-cvs] 20210330 svn commit: r1888194 [10/13] - /httpd/site/trunk/content/security/json/ mailing-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.html mailing-list
- [httpd-cvs] 20210330 svn commit: r1073139 [1/13] - in /websites/staging/httpd/trunk/content: ./ security/json/ mailing-list
- GLSA-201701-36 vendor-advisory
- security.netapp.com
- support.apple.com
- 40909 exploit third-party-advisory vdb-entry
- www.tenable.com