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Category:   Application (Generic)  >   EMC Avamar Vendors:   EMC
EMC Avamar Bugs Let Remote Users Decrypt or Impersonate Connections and Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1036844
SecurityTracker URL:  http://securitytracker.com/id/1036844
CVE Reference:   CVE-2016-0903, CVE-2016-0904, CVE-2016-0905, CVE-2016-0920, CVE-2016-0921   (Links to External Site)
Date:  Sep 20 2016
Impact:   Disclosure of system information, Disclosure of user information, Root access via local system, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): Avamar Data Store (ADS), Avamar Virtual Edition (AVE) prior to 7.3.0
Description:   Multiple vulnerabilities were reported in EMC Avamar. A local user can obtain root privileges on the target system. A remote user can obtain potentially sensitive information on the target system. A remote user can gain access to the target system.

A remote user can exploit an authentication flaw to impersonate an Avamar client agent and access the target client's backup data on the target server [CVE-2016-0903].

The agent and server use a static encryption key. A remote user that can monitor network communications and that has knowledge of the key can eavesdrop on the connection [CVE-2016-0904].

A local admin-level user can invoke the 'sudo' command without providing root credentials to execute arbitrary commands with root privileges [CVE-2016-0905].

A local user can supply a specially crafted parameter value to a certain command via 'sudo' to inject and execute commands with root privileges [CVE-2016-0920].

A local admin-level user can exploit a directory permissions flaw on certain directories to replace directories and files with arbitrary directories and files to execute arbitrary commands with root privileges [CVE-2016-0921].

Jakub Mleczko from the security team from Orange Poland, Jack Baker from Northrop Grumman, and Geoffrey Janjua from Northrop Grumman reported these vulnerabilities.

Impact:   A local user can obtain root privileges on the target system.

A remote user can obtain potentially sensitive information on the target system.

A remote user can gain access to the target system.

Solution:   The vendor has issued a fix (7.3.0-233; Advisory ESA-2016-065).
Vendor URL:  www.emc.com/ (Links to External Site)
Cause:   Access control error, Authentication error, Input validation error
Underlying OS:  Linux (Any), UNIX (AIX), UNIX (FreeBSD), UNIX (HP/UX), UNIX (macOS/OS X), UNIX (Open UNIX-SCO), UNIX (Solaris - SunOS), Windows (Any)

Message History:   None.


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