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Category:   Application (Security)  >   IBM Security Access Manager Vendors:   IBM
(IBM Issues Fix for IBM Security Access Manager Appliance) Apache HTTPD Multiple Flaws Let Remote Users Deny Service, Conduct HTTP Response Splitting Attacks, and Access and Modify Session Data
SecurityTracker Alert ID:  1041159
SecurityTracker URL:  http://securitytracker.com/id/1041159
CVE Reference:   CVE-2016-8743   (Links to External Site)
Date:  Jun 21 2018
Impact:   Denial of service via network, Disclosure of authentication information, Disclosure of system information, Disclosure of user information, Modification of system information, Modification of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 7.0.0
Description:   Multiple vulnerabilities were reported in Apache HTTPD. A remote user can access or modify session data. A remote user can cause the target service to crash. A remote user can conduct HTTP response splitting attacks. IBM Security Access Manager Appliance is affected.

The server does not strictly parse HTTP header data [CVE-2016-8743]. A remote user can submit a specially crafted URL to cause the target server to return a split response. A remote user can exploit this to spoof content on the target server, attempt to poison any intermediate web caches, or conduct cross-site scripting attacks.

A remote user can supply specially crafted data to mod_session_crypto to conduct a padding oracle attack and potentially access and modify session data [CVE-2016-0736].

A remote user can supply specially crafted data to mod_auth_digest to cause the target service to crash [CVE-2016-2161].

Alexander Neumann of RedTeam Pentesting, Maksim Malyutin, David Dennerline at IBM Security's X-Force Researchers, and Regis Leroy reported these vulnerabilities.

Impact:   A remote user can access or modify session data.

A remote user can cause the target service to crash.

A remote user can create a URL that, when loaded by the target user, will cause arbitrary content to be displayed.

A remote user may be able to poison any intermediate web caches with arbitrary content.

Solution:   IBM has issued a fix for CVE-2016-8743 for IBM Security Access Manager Appliance (APAR IJ02932).

The IBM advisory is available at:

https://www-01.ibm.com/support/docview.wss?uid=swg22012356

Vendor URL:  www-01.ibm.com/support/docview.wss?uid=swg22012356 (Links to External Site)
Cause:   Access control error, Authentication error, Input validation error

Message History:   This archive entry is a follow-up to the message listed below.
Dec 21 2016 Apache HTTPD Multiple Flaws Let Remote Users Deny Service, Conduct HTTP Response Splitting Attacks, and Access and Modify Session Data



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