Active Directory with multi factor authentication for an existing web application

Customer is asking for LDAP / Active Directory authentication along with OTP (one time password) / multi-factor authentication for an old existing web application written in (asp.net MVC2). Is this possible?

Currently, we ar… Continue reading Active Directory with multi factor authentication for an existing web application

Security Advisory: Targeting AD FS With External Brute-Force Attacks

On July 2019 Patch Tuesday, Microsoft released a patch for CVE-2019-1126, an important vulnerability discovered by Preempt Research Labs. The vulnerability discovered leads to security issues that create a wide scale denial-of-service against expo… Continue reading Security Advisory: Targeting AD FS With External Brute-Force Attacks

What a malicious user could do with a refresh token that cannot be revoked and has 1 year expiry time?

In ADFS 4.0 a refresh token cannot be renowed without passing through an authorization request flow (asking the user again for credentials) and cannot be revoked.

I’m forced to put a 1 year lifetime for the refresh token to … Continue reading What a malicious user could do with a refresh token that cannot be revoked and has 1 year expiry time?

Microsoft ADFS flaw allows attackers to bypass MFA safeguards

A vulnerability (CVE-2018-8340) in Microsoft Active Directory Federation Services (ADFS) allows a second authentication factor for one account to be used for all other accounts in an organization, Okta REX Security Engineer Andrew Lee has discovered. B… Continue reading Microsoft ADFS flaw allows attackers to bypass MFA safeguards

Microsoft Flaw Allows Full Multi-Factor Authentication Bypass

This is similar to taking a room key for a building and turning it into a skeleton key that works on every door in the building. Continue reading Microsoft Flaw Allows Full Multi-Factor Authentication Bypass