high
7.5
CWE
20 399
Advisory Published
CVE Published
Updated

CVE-2016-8740: Input Validation

First published: Mon Dec 05 2016(Updated: )

apache. Multiple issues existed in Apache. These were addressed by updating Apache to version 2.4.25.

Credit: CVE-2016-0736 CVE-2016-2161 CVE-2016-5387 CVE-2016-8740 CVE-2016-8743 CVE-2016-0736 CVE-2016-2161 CVE-2016-5387 CVE-2016-8740 CVE-2016-8743 CVE-2017-3167 CVE-2017-3169 CVE-2017-7659 CVE-2017-7668 CVE-2017-7679 CVE-2017-9788 CVE-2017-9789 security@apache.org

Affected SoftwareAffected VersionHow to fix
redhat/httpd<2.4.24
2.4.24
Apache HTTP Server=2.4.17
Apache HTTP Server=2.4.18
Apache HTTP Server=2.4.19
Apache HTTP Server=2.4.20
Apache HTTP Server=2.4.21
Apache HTTP Server=2.4.22
Apache HTTP Server=2.4.23
Apple macOS<10.13
10.13
Apple macOS<10.13.1
10.13.1
Apple Sierra
Apple El Capitan

Remedy

https://github.com/apache/httpd/commit/29c63b786ae028d82405421585e91283c8fa0da3

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Peer vulnerabilities

(Found alongside the following vulnerabilities)

Frequently Asked Questions

  • What is CVE-2016-8740?

    CVE-2016-8740 is a vulnerability in the Apache HTTP Server that allows remote attackers to cause a denial of service (memory consumption) via crafted CONTINUATION frames in an HTTP/2 request.

  • How does CVE-2016-8740 affect Apache HTTP Server?

    CVE-2016-8740 affects Apache HTTP Server versions 2.4.17 through 2.4.23 when the Protocols configuration includes h2 or h2c. It does not restrict request-header length, allowing remote attackers to cause a denial of service.

  • What is the severity of CVE-2016-8740?

    CVE-2016-8740 has a severity rating of 7.5 (High).

  • How can I fix CVE-2016-8740?

    To fix CVE-2016-8740, update your Apache HTTP Server to version 2.4.27 or later.

  • Where can I find more information about CVE-2016-8740?

    You can find more information about CVE-2016-8740 at the following references: [1] https://httpd.apache.org/security/vulnerabilities_24.html [2] http://seclists.org/bugtraq/2016/Dec/3 [3] https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1401530

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