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CWE

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CVE-2016-4979

Published: Jul 6, 2016

Modified: Aug 6, 2024

PUBLISHED

Description

The Apache HTTP Server 2.4.18 through 2.4.20, when mod_http2 and mod_ssl are enabled, does not properly recognize the "SSLVerifyClient require" directive for HTTP/2 request authorization, which allows remote attackers to bypass intended access restrictions by leveraging the ability to send multiple requests over a single connection and aborting a renegotiation.

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

References

vendor-advisory

x_refsource_REDHAT

http://httpd.apache.org/security/vulnerabilities_24.html

x_refsource_CONFIRM

vendor-advisory

x_refsource_GENTOO

20160706 CVE-2016-4979: HTTPD webserver - X509 Client certificate based authentication can be bypassed when HTTP/2 is used [vs]

mailing-list

x_refsource_FULLDISC

http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html

x_refsource_CONFIRM

http://www.apache.org/dist/httpd/CHANGES_2.4

x_refsource_CONFIRM

vdb-entry

x_refsource_BID

http://www.oracle.com/technetwork/topics/security/bulletinoct2016-3090566.html

x_refsource_CONFIRM

vdb-entry

x_refsource_SECTRACK

[oss-security] 20160705 CVE-2016-4979: HTTPD webserver - X509 Client certificate based authentication can be bypassed when HTTP/2 is used [vs]

mailing-list

x_refsource_MLIST

https://github.com/apache/httpd/commit/2d0e4eff04ea963128a41faaef21f987272e05a2

x_refsource_CONFIRM

http://packetstormsecurity.com/files/137771/Apache-2.4.20-X509-Authentication-Bypass.html

x_refsource_MISC

https://security.netapp.com/advisory/ntap-20180601-0001/

x_refsource_CONFIRM

[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

[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

x_refsource_MLIST

[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

[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: 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: r1888194 [10/13] - /httpd/site/trunk/content/security/json/

mailing-list

x_refsource_MLIST

[httpd-cvs] 20210330 svn commit: r1073139 [10/13] - in /websites/staging/httpd/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: 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

x_refsource_MLIST

[httpd-cvs] 20210330 svn commit: r1073149 [10/13] - 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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