Tried, Tested and Proven

Vulnerability title: Unauthorised Access To Other Users Email Messages In Symantec PGP Universal Web Messenger

CVE: CVE-2014-1643
Vendor: Symantec
Product: PGP Universal Web Messenger
Affected version: All prior to 3.3.2
Fixed version: 3.3.2
Reported by: Richard O’Donnell

Details:

Authenticated Web Messenger users are able to view other users email messages, by following these steps:

1) Log into the Web Messenger console
2) View the list of sent emails
3) Click on any of the sent emails
4) Click on the `Print’ option and then copy the URL from the page that appears.

The URL will look similar to this:

https://x.x.x.x/b/ps.e?sid=BoomerangMail:72e56j3a-a3r6-5d43-6ef4-aae9c23422ca&showScrollbars=true&dialogId=SentPrintableView1747635619&OWASP_CSRFTOKEN=M22N-J4L3-R3T2-P1AZ-TP1Q-TEFG-IUGH-N6EF

5) Using this URL, brute-force the following part of the `sid’ parameter:

72e56j3a-a3r6-5d43-6ef4-aae9c23422ca

6) Upon identifying a valid value, access to the corresponding email message will be obtained.

Although there is a risk of obtaining unauthorised access to another users email, the likelihood of successfully brute-forcing a correct `sid’ value is considered low, due to its complexity.

It is also noted that encryption of messages was not enabled when this issue was identified and no additional testing was performed with this option enabled.

Impact:

This allows users to read e-mails of other users

Exploit:

Exploit code is not required.

Vendor status:

13/01/2014 Advisory created
14/01/2014 Vendor contacted
14/01/2014 Vendor working on a fix
05/02/2014 Fix released
05/02/2014 CVE obtained
13/02/2014 Published
Copyright:

Copyright © Portcullis Computer Security Limited 2014, All rights reserved worldwide. Permission is hereby granted for the electronic redistribution of this information. It is not to be edited or altered in any way without the express written consent of Portcullis Computer Security Limited.

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