SB2021052055 - Multiple vulnerabilities in Red Hat Single Sign-On 7.4

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Main Vulnerability Database SB2021052055

SB2021052055 - Multiple vulnerabilities in Red Hat Single Sign-On 7.4

Published: May 20, 2021

Security Bulletin ID SB2021052055
Severity
Medium
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Spoofing attack (CVE-ID: CVE-2021-3424)

The vulnerability allows a remote attacker to perform spoofing attack.

The vulnerability exists due to incorrect processing of user IDN names. A remote attacker can register with an IDN name, which looks exactly like a name of previously registered user and trick the application administrator into assigning higher privileges to such account.


2) Insufficient Session Expiration (CVE-ID: CVE-2021-3461)

The vulnerability allows an attacker to gain access to sensitive information.

The vulnerability exists due to the way Keycloak handles backchannel logout requests. If the logout request comes from an external SAML identity provider and Principal Type is set to Attribute [Name], the application ignores such request.


Remediation

Install update from vendor's website.

References