Package Instance

Keycloak has Incorrect Behavior Order: Authorization Before Parsing and Canonicalization
A flaw was found in Keycloak. The Keycloak Authorization header parser is overly permissive regarding the formatting of the "Bearer" authentication scheme. It accepts non-standard characters (such as tabs) as separators and tolerates case variations that deviate from RFC 6750 specifications.

Keycloak SAML javascript protocol mapper: Uploading of scripts through admin console
An issue was discovered in Keycloak allows arbitrary Javascript to be uploaded for the SAML protocol mapper even if the `UPLOAD_SCRIPTS` feature is disabled

Keycloak vulnerable to Stored Cross site Scripting (XSS) when loading default roles
A Stored XSS vulnerability was reported in the Keycloak Security mailing list, affecting all the versions of Keycloak, including the latest release (18.0.1). The vulnerability allows a privileged attacker to execute malicious scripts in the admin console, abusing of the default roles functionality. 

### CVSS 3.1 - **3.8**

**Vector String:** AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:N

**Vector Clarification:**

* User interaction is not required as the admin console is regularly used during an administrator's work
* The scope is unchanged since the admin console web application is both the vulnerable component and where the exploit executes

### Credits

Aytaç Kalıncı, Ilker Bulgurcu, Yasin Yılmaz (@aytackalinci, @smileronin, @yasinyilmaz) - NETAŞ PENTEST TEAM

Insufficient Session Expiration
A flaw was found in the offline_access scope in Keycloak. This issue would affect users of shared computers more (especially if cookies are not cleared), due to a lack of root session validation, and the reuse of session ids across root and user authentication sessions. This enables an attacker to resolve a user session attached to a previously authenticated user; when utilizing the refresh token, they will be issued a token for the original user.

Keycloak Server-Side Request Forgery (SSRF) vulnerability
A flaw was found in Keycloak’s CIBA feature where insufficient validation of client-configured backchannel notification endpoints could allow blind server-side requests to internal services.

URL Redirection to Untrusted Site ('Open Redirect')
A flaw was found in the redirect_uri validation logic in Keycloak. This issue may allow a bypass of otherwise explicitly allowed hosts. A successful attack may lead to an access token being stolen, making it possible for the attacker to impersonate other users.

Keycloak Authentication Error
A vulnerability was found in keycloak 7.x, when keycloak is configured with LDAP user federation and StartTLS is used instead of SSL/TLS from the LDAP server (ldaps), in this case user authentication succeeds even if invalid password has entered.

Keycloak vulnerable to path traversal via double URL encoding
Keycloak does not properly validate URLs included in a redirect. An attacker could construct a malicious request to bypass validation and access other URLs and potentially sensitive information within the domain, or possibly conduct further attacks.