National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2016-1546 Detail

Description

The Apache HTTP Server 2.4.17 and 2.4.18, when mod_http2 is enabled, does not limit the number of simultaneous stream workers for a single HTTP/2 connection, which allows remote attackers to cause a denial of service (stream-processing outage) via modified flow-control windows.

Source:  MITRE      Last Modified:  07/06/2016

Quick Info

CVE Dictionary Entry:
CVE-2016-1546
Original release date:
07/06/2016
Last revised:
01/04/2018
Source:
US-CERT/NIST

Impact

CVSS Severity (version 3.0):
CVSS v3 Base Score:
5.9 Medium
Vector:
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H (legend)
Impact Score:
3.6
Exploitability Score:
2.2
CVSS Version 3 Metrics:
Attack Vector (AV):
Network
Attack Complexity (AC):
High
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
None
Integrity (I):
None
Availability (A):
High
CVSS Severity (version 2.0):
CVSS v2 Base Score:
4.3 MEDIUM
Vector:
(AV:N/AC:M/Au:N/C:N/I:N/A:P) (legend)
Impact Subscore:
2.9
Exploitability Subscore:
8.6
CVSS Version 2 Metrics:
Access Vector:
Network exploitable
Access Complexity:
Medium
Authentication:
Not required to exploit
Impact Type:
Allows disruption of service

References to Advisories, Solutions, and Tools

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Hyperlink Resource Type Source Name
http://httpd.apache.org/security/vulnerabilities_24.html Patch; Vendor Advisory External Source CONFIRM http://httpd.apache.org/security/vulnerabilities_24.html
http://svn.apache.org/viewvc?view=revision&revision=1733727 External Source CONFIRM http://svn.apache.org/viewvc?view=revision&revision=1733727
http://www.apache.org/dist/httpd/CHANGES_2.4 External Source CONFIRM http://www.apache.org/dist/httpd/CHANGES_2.4
http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html External Source CONFIRM http://www.oracle.com/technetwork/security-advisory/cpuoct2016-2881722.html
http://www.oracle.com/technetwork/topics/security/bulletinoct2016-3090566.html External Source CONFIRM http://www.oracle.com/technetwork/topics/security/bulletinoct2016-3090566.html
http://www.securityfocus.com/bid/92331 External Source BID 92331
https://access.redhat.com/errata/RHSA-2017:1161 External Source REDHAT RHSA-2017:1161
https://security.gentoo.org/glsa/201610-02 External Source GENTOO GLSA-201610-02

Technical Details

Vulnerability Type (View All)

  • Resource Management Errors (CWE-399)

Change History 8 change records found - show changes