Improper input validation in Apache Http_server
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 cause a denial of service (memory consumpt…
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.715 (98.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Apache Http_server — versions 2.4.17, 2.4.18, 2.4.19
- Apache Software Foundation Http Server — versions 2.4.17 - 2.4.23
Weakness classification (CWE)
Public proof-of-concept exploits
References
- security@apache.org (x_refsource_CONFIRM)
- security@apache.org (x_refsource_CONFIRM, Patch, Third Party Advisory, Issue Tracking)
- 1037388 (Third Party Advisory, VDB Entry, vdb-entry, x_refsource_SECTRACK)
- security@apache.org (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)
- RHSA-2017:1413 (x_refsource_REDHAT, vendor-advisory)
- RHSA-2017:1161 (x_refsource_REDHAT, vendor-advisory)
- security@apache.org (x_refsource_CONFIRM)
- RHSA-2017:1414 (x_refsource_REDHAT, vendor-advisory)
- security@apache.org (x_refsource_CONFIRM)
- 40909 (Exploit, exploit, Third Party Advisory, VDB Entry, x_refsource_EXPLOIT-DB)
Frequently asked questions
- What is CVE-2016-8740?
- CVE-2016-8740 is a high-severity vulnerability in Apache Http_server, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2016-12-05.
- How severe is CVE-2016-8740?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2016-8740 known to be exploited?
- 9 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.