Vulnerability Monitor

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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 consumption) via crafted CONTINUATION frames in an HTTP/2 request.

Published

2016-12-05T19:59:00.250

Last Modified

2025-04-12T10:46:40.837

Status

Deferred

Source

[email protected]

Severity

CVSSv3.0: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

  • Access Vector: NETWORK
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: PARTIAL
Exploitability Score

10.0

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-20
    CWE-399
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application apache http_server 2.4.17 Yes
Application apache http_server 2.4.18 Yes
Application apache http_server 2.4.19 Yes
Application apache http_server 2.4.20 Yes
Application apache http_server 2.4.21 Yes
Application apache http_server 2.4.22 Yes
Application apache http_server 2.4.23 Yes
References