CVE-2021-3196 Auth bypass in n/a
Attackers can inject unsigned data into SAML responses to impersonate high-privilege users, bypassing authentication controls in Hitachi ID Bravura Security Fabric.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-3196?
CVE-2021-3196 is a high-severity authentication bypass vulnerability in n/a, published on 9 Jun 2021. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An issue was discovered in Hitachi ID Bravura Security Fabric 11.0.0 through 11.1.3, 12.0.0 through 12.0.2, and 12.1.0. When using federated identity management (authenticating via SAML through a third-party identity provider), an attacker can inject additional data into a signed SAML response being transmitted to the service provider (ID Bravura Security Fabric). The application successfully validates the signed values but uses the unsigned malicious values. An attacker with lower-privilege access to the application can inject the username of a high-privilege user to impersonate that user.
Weakness: CWE-347
Which versions are affected by CVE-2021-3196?
It affects 1 product.
Products include Hitachi Id Bravura Security Fabric.
How do I fix CVE-2021-3196?
No fix has been published for CVE-2021-3196 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2021-3196 being exploited?
There is no known exploitation of CVE-2021-3196 in the wild and no public exploit code.
Sources
Also known as GHSA-9mcv-r5rj-7f62.