Securing the SharePoint Platform

Bert JohnsonSharePoint Architect and MCM - PointBridge

Securing the SharePoint Platform

2 | SharePoint Saturday Chicago 2011

Bert Johnson SharePoint Architect with PointBridge Solutions Microsoft Certified Master – SharePoint Server 2010

Twitter: @SPBert Event Hashtag: #SPSChicago

Email: [email protected] Blog: http://blogs.pointbridge.com/Blogs/Johnson_Bert/

mailto:[email protected]

http://blogs.pointbridge.com/Blogs/johnson_bert/


About PointBridge By The Numbers:

Founded in 2004 250+ SharePoint projects 350,000+ hours of SharePoint experience 30,000+ monthly blog hits

2010 Microsoft Midwest District Award for Best Customer Experience 2009 Microsoft Central US Partner of the Year 2009 SharePoint Conference Award: Multi-Solution Capability 2008 Global Partner of the Year finalist: Citizenship 2007 Microsoft US Partner of the Year: SharePoint One of 35 Microsoft National Systems Integrators One of 15 members of Microsoft Partner Advisory Council for

SharePoint


Agenda The Importance of SharePoint Security Facets of SharePoint Security Resources Q & A

The Importance of SharePoint Security


What is SharePoint? SharePoint is:

“A site-provisioning engine”

No really, SharePoint is: A website A series of databases An application platform

SharePoint touches: Your network Your Active Directory Your LOB Systems

SharePoint is a platform with a large attack surface


SharePoint is Everywhere Over 20,000 new SharePoint seats have been added every

day for 5 years Over 1,500 high profile websites on SharePoint SharePoint is becoming increasingly “business critical”

SharePoint is commonly used for Intranets Extranets Internet Sites Application platforms


Types of Security Threats Threats we’re going to explore today:

Data disclosure / theft Data loss System downtime

Types of attacks: Cross-site scripting (XSS) Cross-site request forgery (CSRF) Clickjacking Privilege escalation “Man in the middle” / replay attacks SQL injection

If it’s a threat to other websites or databases, it’s a threat to SharePoint


Software Security in the News March 17 – RSA SecureID Compromised March 24 - Comodo Security Breach April 4 - Epsilon Data Leak April 12 - Largest Microsoft Patch Tuesday April 20 – PlayStation Network Hack May 30 – LulzSec (PBS, Sony, NHS, etc.) June 9 – Citigroup Accounts Accessed

* Concise history of recent Sony hackshttp://attrition.org/security/rants/sony_aka_sownage.html

http://attrition.org/security/rants/sony_aka_sownage.html

Facets of SharePoint Security

Example:They keep piling up!


Planning for Security


Planning for Security Plan personas and define permission

matrices Understand content and security contexts Determine authentication, SSO, and

federation goals Use the SharePoint 2010 upgrade as an

opportunity to apply governance Don’t expect the default settings to protect

you

Example:How’d you build that?


Anonymous Access Carefully decide if SharePoint is the right platform for

anonymous access Especially consider implications for public blogs and

wikis Always use the site lockdown feature

“Get-SPFeature viewformpageslockdown” Further restrict pages using web.config or UAG Add SharePoint to your website security testing Don’t lock out the /_layouts path altogether

Example:I don’t think we’ve met…


Authentication and Directory Security Synchronize only the AD users relevant for

social features Don’t bring confidential information into

user profiles Understand the impacts of third-party

federation Track and block rogue SharePoint

installations with “Service Connection Points”

Develop a password change / managed account strategy

Example:Private audience?


Content Security Audiences are not security

Search content rollups make bypassing audiences simple

Item-level permissions / broken permission inheritance should be the exception, not the rule

Avoid using policies to override permissions

PDFs = Pretty Dangerous Files Consider Information Rights Management

and auditing

Example:The man in the middle…


Network Security Always use SSL for authenticated access Firewall all nonessential public ports Host all servers on the same vLAN Use IPSec for geo-distributed

communication Be aware of “loopback check” implications


Network Security

Example:I’m with him…


Application Security Never expose SharePoint’s application tier

to the internet Don’t host Central Administration on a

web front-end Isolate service accounts and use standard

naming conventions Use multiple IIS application pools (but not

too many) Never use CNames

Example:Thanks for the backup!


Database Security Isolate SharePoint databases from other

systems Minimize the SQL surface area by disabling

unneeded features Consider SQL 2008 “Transparent Data

Encryption” Performance impact, backup size

impact, and file stream impacts Don’t leave SharePoint backups within the

content database or on web-front ends

Example:Your health is showing.


Connected System Security Remove the X-HealthScore,

MicrosoftSharePointTeamServices, and other identifying headers

Leverage the Secure Store Service for safely accessing external systems via BCS

Avoid reliance on Flash content Consider ForeFront UAG endpoint security Set policies regarding data being stored

offline

Example:Could you do this for me?


Custom Development Security Build security testing into the SDLC for all

custom and third-party components Take advantage of CAS policies and the

ULS logs Utilize sandbox solutions whenever

possible Minimize use of

RunWithElevatedPrivilege() With SharePoint 2010, Javascript is now

the biggest threat

Example:You don’t want this help…


Security Maintenance and Monitoring If running WSS/MOSS, patch to October 2010 CU or install

MS10-039 Keep SharePoint, Windows, and SQL patched to latest

service packs Deploy server-side virus protection Use Systems Center Operations Manager with SP health

rules to monitor for performance spikes or errors related to attacks

Build security assessments and spot checks into other SharePoint maintenance plans Familiarize self with “Site Permissions > Check

Permissions”

Resources


Resources Downloadable book: Security for Office SharePoint Server

2007 http://technet.microsoft.com/en-us/library/cc262619(offi

ce.12).aspx Locking down Office SharePoint Server sites

http://technet.microsoft.com/en-us/library/ee191479(office.12).aspx

Plan for and design security http://technet.microsoft.com/en-us/library/cc262331(offi

ce.12).aspx Bert Johnson security blogs

http://blogs.pointbridge.com/Blogs/Johnson_Bert/

http://technet.microsoft.com/en-us/library/cc262619(office.12).aspx








Q & A


Bert Johnson SharePoint Architect with PointBridge Solutions Microsoft Certified Master – SharePoint Server 2010

Twitter: @SPBert Event Hashtag: #SPSChicago

Email: [email protected] Blog: http://blogs.pointbridge.com/Blogs/Johnson_Bert/

mailto:[email protected]

http://blogs.pointbridge.com/Blogs/johnson_bert/


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Securing the SharePoint Platform