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Category:   Device (Embedded Server/Appliance)  >   McAfee Web Gateway Vendors:   McAfee
(McAfee Issues Fix for McAfee Web Gateway) Glibc Stack/Heap Memory Allocation Error Lets Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1039052
SecurityTracker URL:  http://securitytracker.com/id/1039052
CVE Reference:   CVE-2017-1000366   (Links to External Site)
Date:  Aug 2 2017
Impact:   Execution of arbitrary code via local system, Root access via local system, User access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 7.6.2.14 and prior, 7.7.2.2 and prior
Description:   A vulnerability was reported in Glibc. A local user can obtain elevated privileges on the target system. McAfee Web Gateway is affected.

A local user can supply specially crafted LD_LIBRARY_PATH values to trigger a stack memory allocation flaw in certain cases and execute arbitrary code on the target system with elevated privileges.

The stack guard-page memory gap can be "jumped" in cases where heap memory and stack memory are adjacent.

The original advisory is available at:

https://www.qualys.com/2017/06/19/stack-clash/stack-clash.txt

Qualys Research Labs reported this vulnerability.

Impact:   A local user can obtain elevated privileges on the target system.
Solution:   McAfee has issued a fix for CVE-2017-1000366 for McAfee Web Gateway (7.6.2.15, 7.7.2.3).

[Editor's note: The vendor states that default installations that do not have a local shell user are not affected.]

The McAfee advisory is available at:

https://kc.mcafee.com/corporate/index?page=content&id=SB10205

Vendor URL:  kc.mcafee.com/corporate/index?page=content&id=SB10205 (Links to External Site)
Cause:   Access control error

Message History:   This archive entry is a follow-up to the message listed below.
Jun 20 2017 Glibc Stack/Heap Memory Allocation Error Lets Local Users Gain Elevated Privileges



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