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Category:   Device (Embedded Server/Appliance)  >   Juniper Junos Space Vendors:   Juniper
(Juniper Issues Fix for Junos Space) GNU bash Environment Variable Processing Flaw Lets Users Execute Arbitrary Code
SecurityTracker Alert ID:  1030922
SecurityTracker URL:  http://securitytracker.com/id/1030922
CVE Reference:   CVE-2014-6271, CVE-2014-6277, CVE-2014-6278, CVE-2014-7169, CVE-2014-7186, CVE-2014-7187   (Links to External Site)
Updated:  Jun 2 2015
Original Entry Date:  Sep 26 2014
Impact:   Execution of arbitrary code via local system, Execution of arbitrary code via network, User access via local system, User access via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): Junos Space, JA1500, JA2500
Description:   A vulnerability was reported in GNU bash. A user can execute arbitrary code on the target system. Juniper Junos Space is affected.

The software does not properly process environment variables.

A user can supply a specially crafted value that includes a bash function followed by additional code that, when processed by bash, will execute the additional code [CVE-2014-6271]. This vulnerability is known as "Shellshock".

Stephane Chazelas reported this vulnerability.

An initial fix for CVE-2014-6271 did not properly fix this flaw [CVE-2014-7169].

A user can supply a specially crafted value to trigger an out-of-bounds memory access in redir_stack() and potentially execute arbitrary code [CVE-2014-7186].

Florian Weimer of Red Hat Product Security reported this vulnerability.

A user can supply specially crafted, deeply nested flow control constructs to trigger an off-by-one error and potentially execute arbitrary code [CVE-2014-7187].

Florian Weimer of Red Hat Product Security reported this vulnerability.

A user can supply specially crafted data to access uninitialized memory and overwrite a pointer to potentially execute arbitrary code [CVE-2014-6277].

A user can supply specially crafted data to execute arbitrary code [CVE-2014-6278].

Michal Zalewski reported these vulnerabilities.

On a system with an application that passes data from a remote or remote authenticated user to bash, a remote or remote authenticated user may be able to exploit these vulnerabilities to execute arbitrary code.

Some common system application configurations are affected.

Demonstration exploit code is available.

This vulnerability is being actively exploited.

Impact:   A user can execute arbitrary code on the target system. In some application configurations, a remote user may be able to exploit this.
Solution:   Juniper has issued a fix for Juniper Junos Space (14.1R2).

The Juniper advisory is available at:

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10648

Vendor URL:  kb.juniper.net/InfoCenter/index?page=content&id=JSA10648 (Links to External Site)
Cause:   Input validation error

Message History:   This archive entry is a follow-up to the message listed below.
Sep 24 2014 GNU bash Environment Variable Processing Flaws Let Users Execute Arbitrary Code



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