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Category:   Device (Router/Bridge/Hub)  >   Juniper Junos Vendors:   Juniper
Juniper Junos SRX300 Series MACsec Non-Secure Fallback Lets Remote Users Obtain Potentially Sensitive Information on the Target System
SecurityTracker Alert ID:  1038890
SecurityTracker URL:  http://securitytracker.com/id/1038890
CVE Reference:   CVE-2017-2342   (Links to External Site)
Date:  Jul 13 2017
Impact:   Disclosure of system information, Disclosure of user information
Fix Available:  Yes  Vendor Confirmed:  Yes  
Version(s): 15.1X49 prior to 15.1X49-D100; SRX300 Series
Description:   A vulnerability was reported in Juniper Junos on SRX300 Series devices. A remote user can obtain potentially sensitive information on the target system.

When MACsec is configured on a port that is not capable of MACsec or when a secure link can not be established, the system falls back to an unencrypted link without notice. A remote user that can monitor the network can view potentially sensitive information on the target link.

SRX300 series devices are affected.

The vendor has assigned PRs 1244795 and 1261983 to this vulnerability.

Eric Haszlakiewicz and Thor Simon of Two Sigma Investments, LP reported this vulnerability.

Impact:   A remote user can obtain potentially sensitive information from the target unencrypted link.
Solution:   The vendor has issued a fix (15.1X49-D100).

The vendor advisory is available at:

https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10790

Vendor URL:  kb.juniper.net/InfoCenter/index?page=content&id=JSA10790 (Links to External Site)
Cause:   Access control error, State error

Message History:   None.


 Source Message Contents

Subject:  https://kb.juniper.net/InfoCenter/index?page=content&id=JSA10790

 
 


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