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Category:   Application (Web Server/CGI)  >   Apache HTTPD Vendors:   Apache Software Foundation
Apache HTTPD HTTP/2 Request Processing Bug Lets Remote Users Consume Excessive Worker Processes on the Target System
SecurityTracker Alert ID:  1041402
SecurityTracker URL:  http://securitytracker.com/id/1041402
CVE Reference:   CVE-2018-1333   (Links to External Site)
Date:  Aug 1 2018
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): prior to 2.4.34
Description:   A vulnerability was reported in Apache HTTPD. A remote user can consume excessive worker resources on the target system.

A remote user can send specially crafted HTTP/2 requests to cause worker processes to be allocated for 60 seconds longer than required, consuming excessive worker resources on the target system.

Systems configured for and with HTTP/2 support enabled are affected.

Craig Young of Tripwire VERT reported this vulnerability.

Impact:   A remote user can consume excessive worker resources on the target system.
Solution:   The vendor has issued a fix (2.4.34).

The vendor advisory is available at:

https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2018-1333

Vendor URL:  httpd.apache.org/security/vulnerabilities_24.html#CVE-2018-1333 (Links to External Site)
Cause:   Resource error
Underlying OS:  Linux (Any), UNIX (Any), Windows (Any)

Message History:   This archive entry has one or more follow-up message(s) listed below.
Oct 4 2018 (Ubuntu Issues Fix) Apache HTTPD HTTP/2 Request Processing Bug Lets Remote Users Consume Excessive Worker Processes on the Target System
Ubuntu has issued a fix for Ubuntu Linux 18.04 LTS.



 Source Message Contents



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