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Mend.io Vulnerability Database

CVE-2016-4979

Date: July 6, 2016

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.

Language: C

Severity Score

7.5

Related Resources (28)

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

Url: https://lists.apache.org/thread.html/re1e3a24664d35bcd0a0e793e0b5fc6ca6c107f99a1b2c545c5d4b467%40%3Ccvs.httpd.apache.org%3E

Url: https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E

Url: https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E

Url: https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E

Url: https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E

Url: http://www.openwall.com/lists/oss-security/2016/07/05/5

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

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

Url: https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3E

Url: https://lists.apache.org/thread.html/rcc44594d4d6579b90deccd4536b5d31f099ef563df39b094be286b9e%40%3Ccvs.httpd.apache.org%3E

Url: https://nvd.nist.gov/vuln/detail/CVE-2016-4979

Url: https://lists.apache.org/thread.html/r04e89e873d54116a0635ef2f7061c15acc5ed27ef7500997beb65d6f%40%3Ccvs.httpd.apache.org%3E

Url: https://access.redhat.com/errata/RHSA-2016:1420

Url: https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3E

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

Url: https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E

Url: http://seclists.org/fulldisclosure/2016/Jul/11

Url: https://lists.apache.org/thread.html/rb14daf9cc4e28d18cdc15d6a6ca74e565672fabf7ad89541071d008b%40%3Ccvs.httpd.apache.org%3E

Url: http://www.securityfocus.com/bid/91566

Url: https://security-tracker.debian.org/tracker/CVE-2016-4979

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

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

Url: http://www.securitytracker.com/id/1036225

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

Url: https://security.gentoo.org/glsa/201610-02

Url: https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E

Url: https://www.mend.io/vulnerability-database/CVE-2016-4979

Severity Score

7.5

Weakness Type (CWE)

Improper Access Control

CWE-284

CVSS v3.1

Base Score:	7.5
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	NONE
Scope (S):	UNCHANGED
Confidentiality (C):	NONE
Integrity (I):	HIGH
Availability (A):	NONE

CVSS v2

Base Score:	5.0
Access Vector (AV):	NETWORK
Access Complexity (AC):	LOW
Authentication (AU):	NONE
Confidentiality (C):	NONE
Integrity (I):	PARTIAL
Availability (A):	NONE
Additional information:

Mend.io Vulnerability Database

We found results for “”

CVE-2016-4979

Date: July 6, 2016

Language: C

Severity Score

Related Resources (28)

Severity Score

Weakness Type (CWE)

CVSS v3.1

CVSS v2

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