Junos pulse client 3.0 for mac os x fails to connect to SRX 11:02 AM I have downloaded the new junos pulse client for Mac OS X (j-pulse-mac-3.0r1-b19307-installer.dmg) and fired it up. You should now have control over the keyboard and mouse of your work Mac. Adding Junos Pulse permanently to the Dock. If you know you’ll be working from home often, add the Junos Pulse app to the Dock for easy access. Click and hold the. Icon in the Dock until a menu appears. Select Options Keep in dock.
XLAB ID: XLAB-16-001
CVE ID: CVE-2016-2408
Patch Status: Fixed
Affected Products:
Tested:
- Pulse Secure Desktop Client (Juniper Junos Pulse) All Versions up to v5.2r3
Vendor Provided (see vendor advisory in Solution section for details):
- Pulse Secure Desktop Client 5.2R1 to 5.2R2, 5.1R1 to 5.1R9, 5.0R1 to 5.0R15
- Standalone Pulse Installer Service 8.2R1 to 8.2R2, 8.1R1 to 8.1R9, 8.0R1 to 8.0R15, 7.4R1 to 7.4R13.6
- Pulse Secure Collaboration 8.2R1 to 8.2R2, 8.1R1 to 8.1R9, 8.0R1 to 8.0R15
- Odyssey Access Client all versions before 5.6R16
This vulnerability only affects Windows operating system.
Background:
“The Pulse Secure desktop client provides a secure and authenticated connection from an endpoint device (either Windows or Mac OS X) to a Pulse Secure gateway (either Pulse Connect Secure or Pulse Policy Secure).”
Vulnerability Details:
Juniper Junos Pulse (now known as Pulse Secure Desktop Client) installs a system service dsAccessService.exe, which owns a named pipe NeoterisSetupService.
This named pipe has an Everyone Full Control ACL and is writable by all users.
The pipe server employs a custom encryption function. The key is derived from processor type, processor frequency, operating system product id, operating system version, and hardcoded values.
This pipe is used to install new services, possibly for automatic upgrade purpose. Once new data is received from the pipe, it is decrypted as a file path, and the specified file is copied to C:WindowsTemp and executed.
The service installation logic is implemented in dsInstallService.dll. It reads the path and split file name from the path. But this implementation has a bug which cause it to only split string after the “' character from the path, but not the “/“ character.
Pass in a path such as “C:Users/Guest/AppData/Local/test.exe” will cause it to use “Users/Guest/AppData/Local/test.exe” as the file name, and CopyFile to path “C:WindowsTempUsers/Guest/AppData/Local/test.exe”.
When the CopyFile fails, the program then uses the original path “C:Users/Guest/AppData/Local/test.exe” to create new process.
Finally, the service will verify the digital signature before executing the file. However, since the path is completely controllable by the attacker, simply placing a signed executable under “C:Users/Guest/AppData/Local/“ and hijack the executable with a malicious DLL can trigger arbitrary code execution and privilege escalation to SYSTEM.
Solution:
Install the latest version of Pulse Secure product, which is available from Pulse Secure official website.
Pulse Secure has also issued an advisory about this vulnerability:
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA40241
Disclosure Timeline:
| 2016/02/18 | Report vulnerability to MITRE |
|---|---|
| 2016/02/18 | MITRE assigned CVE-ID CVE-2016-2408 |
| 2016/02/18 | Provide vulnerability detail and CVE-ID to Pulse Secure via psirt at pulsesecure.net |
| 2016/02/18 | Pulse Secure responded that they are developing a fix, but no timeline is available |
| 2016/03/07 | Pulse Secure responded that they are still developing a fix, but no timeline is available, “update soon” |
| 2016/03/25 | Pulse Secure responded that they are still developing a fix, but no timeline is available |
| 2016/04/22 | Notify Pulse Secure it is now 63 days since original report, asking fix progress |
| 2016/04/26 | Pulse Secure responded that they are still developing a fix, but no timeline is available, asking for grace periods |
| 2016/05/03 | Reply that we do give grace periods but need an ETA |
| 2016/05/12 | Pulse Secure responded that they are still developing a fix, but no timeline is available |
| 2016/05/19 | Pulse Secure responded that they are still developing a fix, ETA is October 2016, asking for grace periods |
| 2016/05/20 | Reply that we do not give grace period this long and another 60 days is the maximum. |
| 2016/05/20 | Pulse Secure responded that another 60 days is acceptable |
| 2016/07/18 | Pulse Secure responded that an issue has been found in internal testing, and request another extension to August 1, 2016. |
| 2016/07/18 | Reply that we have already requested coordination from multiple organizations and the process is irreversible. Last day is July 25, 2016. |
| 2016/07/25 | Coordinated disclosure |
Credit:
This vulnerability was discovered by: Zhipeng Huo
Overview
Junos Pulse is a Shareware software in the category Web Development developed by Juniper Networks.
Junos Pulse 5.1 Download
It was checked for updates 31 times by the users of our client application UpdateStar during the last month.
The latest version of Junos Pulse is 5.1, released on 10/20/2016. It was initially added to our database on 01/28/2011.
Junos Pulse runs on the following operating systems: Android/Windows/Mac. The download file has a size of 19.9MB.
Junos Pulse has not been rated by our users yet.
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