It was found that the cookie used for CSRF prevention in Keycloak was not unique to each session. An attacker could use this flaw to gain access to an authenticated user session, leading to possible information disclosure or further attacks.
Weakness
According to WASC, “Insufficient Session Expiration is when a web site permits an attacker to reuse old session credentials or session IDs for authorization.”
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Single_sign_on | Redhat | 7.0 (including) | 7.0 (including) |
| Single_sign_on | Redhat | 7.1 (including) | 7.1 (including) |
| Red Hat Single Sign-On 7.1 | RedHat | * | |
| Red Hat Single Sign-On 7.1 for RHEL 6 | RedHat | rh-sso7-keycloak-0:2.5.14-1.Final_redhat_1.1.jbcs.el6 | * |
| Red Hat Single Sign-On 7.1 for RHEL 7 | RedHat | rh-sso7-keycloak-0:2.5.14-1.Final_redhat_1.1.jbcs.el7 | * |
Potential Mitigations
References
- http://www.securityfocus.com/bid/101601
- https://access.redhat.com/errata/RHSA-2017:2904
- https://access.redhat.com/errata/RHSA-2017:2905
- https://access.redhat.com/errata/RHSA-2017:2906
- https://bugzilla.redhat.com/show_bug.cgi?id=1484111
- http://www.securityfocus.com/bid/101601
- https://access.redhat.com/errata/RHSA-2017:2904
- https://access.redhat.com/errata/RHSA-2017:2905
- https://access.redhat.com/errata/RHSA-2017:2906
- https://bugzilla.redhat.com/show_bug.cgi?id=1484111