CVE-2016-8740

Advisory lineage Upstream: 0 Downstream: 6
Modified
Published: 05 Dec 2016, 19:00
Last modified:06 Aug 2024, 02:34

Vulnerability Summary

Overall Risk (default)
high
54/100
CVSS Score
7.5 HIGH
v3.0 (nvd)
EPSS Score
71.52% CRITICAL
72% probability +3.26%
KEV
Not listed
Ransomware
No reports
Public exploits
2 found
Dark Web
Not detected

Timeline

05 Dec 2016, 19:00
Published
Vulnerability first disclosed
06 Aug 2024, 02:34
Last Modified
Vulnerability information updated

Description

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.

CVSS Metrics

  • v3.0•HIGH•Score: 7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • v2.0•MEDIUM•Score: 5AV:N/AC:L/Au:N/C:N/I:N/A:P

EPSS Trends

Current EPSS score: 71.52%• Percentile: 99%

Techniques & Countermeasures

  • CWE-20•Improper Input Validation

    The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

  • CWE-399•Resource Management Errors

    Weaknesses in this category are related to improper management of system resources.

Affected Systems

  • apache software foundation•apache http server

    2.4.17 - 2.4.23

  • Unknown•HTTP Server

    2.4.17 | 2.4.18 | 2.4.19 | 2.4.20 | 2.4.21 | 2.4.22 | 2.4.23

References (28)