MS14-004 – Important : Vulnerability in Microsoft Dynamics AX Could Allow Denial of Service (2880826) – Version: 1.0

 Microsoft Security Bulletins  Comments Off on MS14-004 – Important : Vulnerability in Microsoft Dynamics AX Could Allow Denial of Service (2880826) – Version: 1.0
Jan 142014
 

Severity Rating: Important
Revision Note: V1.0 (January 14, 2014): Bulletin published.
Summary: This security update resolves one privately reported vulnerability in Microsoft Dynamics AX. The vulnerability could allow denial of service if an authenticated attacker submits specially crafted data to an affected Microsoft Dynamics AX Application Object Server (AOS) instance. An attacker who successfully exploited this vulnerability could cause the target AOS instance to stop responding to client requests.

Do you have your network perimeter secured against downloading malicious content?, (Sat, Sep 28th)

 SANS Internet Storm Center, Security Alerts  Comments Off on Do you have your network perimeter secured against downloading malicious content?, (Sat, Sep 28th)
Sep 282013
 

Information security professionals take very seriously the network perimeter and tend to put in place several devices to enforce access control to network resources like firewalls, IPS, content filtering devices including antimalware functionality and network access control. But there are two specific variables that can increase a lot the risk of external compromises:

  • Administrative privileges in desktop computers: Many types of business software do not have implemented the principle of requiring the least privileges. That us why now a significant percentage of companies grant Administrator privileges to users, where their use is not monitored in detail.
  • USB device control: Many companies subject to compliance regulations does not allow usage of USB ports at all. However, those companies are a small percent of the total universe and the remaining ones are not willing to implement unpopular measures.

Consider the following scenario: companies with PC accessing through the official Internet access and corporate laptops with 4G access:

There are some circumstances where the CISO might be really unpopular, like the day where the official country's soccer team is playing a decisive match. Of course, the official internet access won't allow the access to the stream and so, people will find "alternate ways" to access it. Since not too many people knows the concept of default gateway and how to change it in the computer without causing themselves a self-inflicted denial of service, There is a very interesting program called delegate, which is a multipurpose proxy and will fit for the need of bypassing the internet access. Since there is a very detailed usage examples page, people can start using it without further difficulty.

Most people in corporate networks are aware that the "proxy parameter" exist, so it is very easy for them to change it and enjoy the "benefits" of free-of-restriction internet.

How can you tell if you have "free proxies" inside your network that use the illustrated scenario? nmap has a plugin that is able to check for open proxies. If you want to check for open proxies inside network 192.168.0.0/24, you can issue the command nmap –script http-open-proxy.nse 192.168.0.0/24. The following figure shows an example result for the discussed scenario:

 

You should definitely segregate administrator privileges for your users and also disallow usage of 3G an 4G devices when plugged into the corporate network. If you don't have tools for this, you should monitor the usage for the administrator privileges given to your users.

Manuel Humberto Santander Peláez
SANS Internet Storm Center – Handler
Twitter:@manuelsantander
Web:http://manuel.santander.name
e-mail: msantand at isc dot sans dot org

(c) SANS Internet Storm Center. http://isc.sans.edu Creative Commons Attribution-Noncommercial 3.0 United States License.

Microsoft September 2013 Black Tuesday Overview, (Tue, Sep 10th)

 SANS Internet Storm Center, Security Alerts  Comments Off on Microsoft September 2013 Black Tuesday Overview, (Tue, Sep 10th)
Sep 102013
 

Overview of the September 2013 Microsoft patches and their status.

# Affected Contra Indications – KB Known Exploits Microsoft rating(**) ISC rating(*)
clients servers
MS13-067 A multitude of vulnerabilities in sharepoint (Office Server) have been fixed. It could lead to a Denial of Service over privilege escalation  to random code execution with the rights of the W3WP service account.
CVE-2013-1315 is also mentioned in MS13-073.
CVE-2013-3847, CVE-2013-3848, CVE-2013-3849, CVE-2013-3857 and CVE-2013-3858 are also mentioned in MS13-072.
Also contains functional changes for Visio Services.
Sharepoint

CVE-2013-0081
CVE-2013-1315
CVE-2013-1330
CVE-2013-3179
CVE-2013-3180
CVE-2013-3847
CVE-2013-3848
CVE-2013-3849
CVE-2013-3857
CVE-2013-3858

KB 2834052 CVE-2013-3180 was publicly disclosed. Severity:Critical
Exploitability:1
NA Critical
MS13-068 A input validation error dealign with S/MIME messages leads to random code execution with the rights of the logged on user. The vulnerability can be triggered by merely viewing or previewing a message.
Outlook

CVE-2013-3870

KB 2756473 No publicly known exploits Severity:Critical
Exploitability:2
Critical Important
MS13-069 A set of 10 new memory corruption vulnerabilities in this monthly instance of the cumulative MSIE patch. They lead to random code execution withthe rights of the logged on user.
MSIE

CVE-2013-3201
CVE-2013-3202
CVE-2013-3203
CVE-2013-3204
CVE-2013-3205
CVE-2013-3206
CVE-2013-3207
CVE-2013-3208
CVE-2013-3209
CVE-2013-3245

KB 2870699 No publicly known exploits Severity:Critical
Exploitability:1
Critical Important
MS13-070 A memory handling error in OLE allows for random code execution with the rights of the logged on user.
OLE

CVE-2013-3863

KB 2876217 No publicly known exploits Severity:Critical
Exploitability:1
Critical Important
MS13-071

A vulnerability in handling the theme files allows for random code execution with the rights of the logged on user.

Theme

CVE-2013-0810

KB 2864063 No publicly known exploits Severity:Important
Exploitability:1
Critical Important
MS13-072 Multiple vulnerabilities allow information leaks and random code execution with the rights of the logged on user.
CVE-2013-3847, CVE-2013-3848, CVE-2013-3849, CVE-2013-3857 and CVE-2013-3858 are also mentioned in MS13-067.
Office

CVE-2013-3160
CVE-2013-3847
CVE-2013-3848
CVE-2013-3849
CVE-2013-3850
CVE-2013-3851
CVE-2013-3852
CVE-2013-3853
CVE-2013-3854
CVE-2013-3855
CVE-2013-3856
CVE-2013-3857
CVE-2013-3858

KB 2845537 No publicly known exploits Severity:Important
Exploitability:1
Critical Important
MS13-073 Multiple vulnerabilities in Excel allow for information leak and random code execution with the rights of the logged on user.
CVE-2013-1315 is also mentioned in MS13-067.
Excel 

CVE-2013-1315
CVE-2013-3158
CVE-2013-3159

KB 2858300 No publicly known exploits Severity:Important
Exploitability:3
Critical Important
MS13-074 Multiple vulnerabilities allow random code execution with the rights of the logged on user.
Access

CVE-2013-3155
CVE-2013-3156
CVE-2013-3157

KB 2848637 No publicly known exploits Severity:Important
Exploitability:1
Critical Important
MS13-075 Pinyn Input Method Editor (IME) for Simplified Chinese allows for a privilege escalation by the user to local system. 
Office IME (Chinese)

CVE-2013-3859

KB 2878687 No publicly known exploits Severity:Important
Exploitability:1
Important Less urgent
MS13-076 Multiple memory corruption vulnerabilities allow privilege escalation. 
Kernel Mode Drivers

CVE-2013-1341
CVE-2013-1342
CVE-2013-1343
CVE-2013-1344
CVE-2013-3864
CVE-2013-3865
CVE-2013-3866

KB 2876315 No publicly known exploits Severity:Important
Exploitability:1
Important Less urgent
MS13-077 A double free vulnerability in the Service Control manager (SCM) allows privilege escalation.
Service Control Manager

CVE-2013-3862

KB 2872339 No publicly known exploits Severity:Important
Exploitability:2
Important Less Urgent
MS13-078

An information leak vulnerability in Frontpage while handling the DTD of an XML file.

Frontpage

CVE-2013-3137

KB 2825621 No publicly known exploits Severity:Important
Exploitability:3
Important Less Urgent
MS13-079 A Denial of Service vulnerability in Active Directory by a query to the LDAP service. Lasts till an administroator restarts the service.
Active Directory

CVE-2013-3868

KB 2853587 No publicly known exploits Severity:Important
Exploitability:3
NA Important
We will update issues on this page for about a week or so as they evolve.
We appreciate updates
US based customers can call Microsoft for free patch related support on 1-866-PCSAFETY
(*): ISC rating

  • We use 4 levels:

    • PATCH NOW: Typically used where we see immediate danger of exploitation. Typical environments will want to deploy these patches ASAP. Workarounds are typically not accepted by users or are not possible. This rating is often used when typical deployments make it vulnerable and exploits are being used or easy to obtain or make.
    • Critical: Anything that needs little to become "interesting" for the dark side. Best approach is to test and deploy ASAP. Workarounds can give more time to test.
    • Important: Things where more testing and other measures can help.
    • Less Urgent: Typically we expect the impact if left unpatched to be not that big a deal in the short term. Do not forget them however.
  • The difference between the client and server rating is based on how you use the affected machine. We take into account the typical client and server deployment in the usage of the machine and the common measures people typically have in place already. Measures we presume are simple best practices for servers such as not using outlook, MSIE, word etc. to do traditional office or leisure work.
  • The rating is not a risk analysis as such. It is a rating of importance of the vulnerability and the perceived or even predicted threat for affected systems. The rating does not account for the number of affected systems there are. It is for an affected system in a typical worst-case role.
  • Only the organization itself is in a position to do a full risk analysis involving the presence (or lack of) affected systems, the actually implemented measures, the impact on their operation and the value of the assets involved.
  • All patches released by a vendor are important enough to have a close look if you use the affected systems. There is little incentive for vendors to publicize patches that do not have some form of risk to them.

(**): The exploitability rating we show is the worst of them all due to the too large number of ratings Microsoft assigns to some of the patches.


Swa Frantzen

(c) SANS Internet Storm Center. http://isc.sans.edu Creative Commons Attribution-Noncommercial 3.0 United States License.

MS13-079 – Important : Vulnerability in Active Directory Could Allow Denial of Service (2853587) – Version: 1.0

 Microsoft Security Bulletins  Comments Off on MS13-079 – Important : Vulnerability in Active Directory Could Allow Denial of Service (2853587) – Version: 1.0
Sep 102013
 

Severity Rating: Important
Revision Note: V1.0 (September 10, 2013): Bulletin published.
Summary: This security update resolves a privately reported vulnerability in Active Directory. The vulnerability could allow denial of service if an attacker sends a specially crafted query to the Lightweight Directory Access Protocol (LDAP) service.

Microsoft September Patch Pre-Announcement, (Sat, Sep 7th)

 SANS Internet Storm Center, Security Alerts  Comments Off on Microsoft September Patch Pre-Announcement, (Sat, Sep 7th)
Sep 072013
 

Microsoft released its pre-announcement for the upcoming patch Tuesday. The summary indicates 14 bulletins total, 4 are critical all with remote code execution and 10 Important with a mix of remote code execution, Denial of Service and elevation of privileges. The announcement is available here.

[1] http://technet.microsoft.com/en-us/security/bulletin/ms13-sep

———–

Guy Bruneau IPSS Inc. gbruneau at isc dot sans dot edu

(c) SANS Internet Storm Center. http://isc.sans.edu Creative Commons Attribution-Noncommercial 3.0 United States License.

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