Perimeter
9/21/2011
12:34 PM
Taher Elgamal
Taher Elgamal
Commentary
Connect Directly
RSS
E-Mail
50%
50%
Repost This

Identity Federation: Waiting On Access Control

Separate authentication by websites will remain the reality until access control is done right in Web apps

Identity federation has been talked about lately as the ultimate solution to user authentication on the Web. The basic idea of enabling one site to provide an authentication assertion to another is a good idea, and will likely work in some circumstances. The issue that needs elaboration is what the authentication enables a user to do.

In the Web application space, access control is almost always an immediate result of a successful user login. The question is whether knowledge of a certain website password entitles a user to get access to a financial, healthcare, or some other site. Would your bank ever trust that the some-other site did enough checking on a customer's identity to enable a successful login? And if that is not the case, then how many passwords are we going to have to remember?

It is good to remember that everything we might be able to assert on a user identity is a point on a continuum: There really is no black and white here. So until access control is done correctly in Web applications, I believe that most of the websites will have to provide somewhat separate authentication criteria.

Recognized in the industry as the "inventor of SSL," Dr. Taher Elgamal led the SSL efforts at Netscape. He also wrote the SSL patent and promoted SSL as the Internet security standard within standard committees and the industry. Dr. Elgamal invented several industry and government standards in data security and digital signatures area, including the DSS government standard for digital signatures. In addition to serving on numerous corporate advisory boards, Dr. Elgamal is the Chief Security Officer at Axway, a global provider of multi-enterprise solutions and infrastructure. He holds a Ph.D. and M.S. in Computer Science from Stanford University. View more of his blog posts here.

Comment  | 
Print  | 
More Insights
Register for Dark Reading Newsletters
White Papers
Flash Poll
Current Issue
Video
Slideshows
Twitter Feed
Dark Reading - Bug Report
Bug Report
Enterprise Vulnerabilities
From DHS/US-CERT's National Vulnerability Database
CVE-2008-3277
Published: 2014-04-15
Untrusted search path vulnerability in a certain Red Hat build script for the ibmssh executable in ibutils packages before ibutils-1.5.7-2.el6 in Red Hat Enterprise Linux (RHEL) 6 and ibutils-1.2-11.2.el5 in Red Hat Enterprise Linux (RHEL) 5 allows local users to gain privileges via a Trojan Horse p...

CVE-2010-2236
Published: 2014-04-15
The monitoring probe display in spacewalk-java before 2.1.148-1 and Red Hat Network (RHN) Satellite 4.0.0 through 4.2.0 and 5.1.0 through 5.3.0, and Proxy 5.3.0, allows remote authenticated users with permissions to administer monitoring probes to execute arbitrary code via unspecified vectors, rela...

CVE-2011-3628
Published: 2014-04-15
Untrusted search path vulnerability in pam_motd (aka the MOTD module) in libpam-modules before 1.1.3-2ubuntu2.1 on Ubuntu 11.10, before 1.1.2-2ubuntu8.4 on Ubuntu 11.04, before 1.1.1-4ubuntu2.4 on Ubuntu 10.10, before 1.1.1-2ubuntu5.4 on Ubuntu 10.04 LTS, and before 0.99.7.1-5ubuntu6.5 on Ubuntu 8.0...

CVE-2012-0214
Published: 2014-04-15
The pkgAcqMetaClearSig::Failed method in apt-pkg/acquire-item.cc in Advanced Package Tool (APT) 0.8.11 through 0.8.15.10 and 0.8.16 before 0.8.16~exp13, when updating from repositories that use InRelease files, allows man-in-the-middle attackers to install arbitrary packages by preventing a user fro...

CVE-2013-4768
Published: 2014-04-15
The web services APIs in Eucalyptus 2.0 through 3.4.1 allow remote attackers to cause a denial of service via vectors related to the "network connection clean up code" and (1) Cloud Controller (CLC), (2) Walrus, (3) Storage Controller (SC), and (4) VMware Broker (VB).

Best of the Web