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Security Advisories: MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLWdxNjctcHA5dy00M2dw

Cryptographically weak CSRF tokens in Apache MyFaces

In the default configuration, Apache MyFaces Core versions 2.2.0 to 2.2.13, 2.3.0 to 2.3.7, 2.3-next-M1 to 2.3-next-M4, and 3.0.0-RC1 use cryptographically weak implicit and explicit cross-site request forgery (CSRF) tokens. Due to that limitation, it is possible (although difficult) for an attacker to calculate a future CSRF token value and to use that value to trick a user into executing unwanted actions on an application.

Mitigation: Existing web.xml configuration parameters can be used to direct MyFaces to use SecureRandom for CSRF token generation:

org.apache.myfaces.RANDOM_KEY_IN_VIEW_STATE_SESSION_TOKEN=secureRandom org.apache.myfaces.RANDOM_KEY_IN_CSRF_SESSION_TOKEN=secureRandom org.apache.myfaces.RANDOM_KEY_IN_WEBSOCKET_SESSION_TOKEN=secureRandom

Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 2 years ago
Updated: 10 months ago

Identifiers: GHSA-gq67-pp9w-43gp, CVE-2021-26296

Affected Packages

Versions: >= 2.3.0, < 2.3.8, >= 2.2.0, < 2.2.14, >= 2.1.0, < 2.1.19, < 2.0.25
Fixed in: 2.3.8, 2.2.14, 2.1.19, 2.0.25