Описание
Eclipse Jetty: Early return from the JASPIAuthenticator code can potentially no clear ThreadLocal variables
Description (as reported)
A security vulnerability has been identified in Jetty's JaspiAuthenticator.java.
The root cause is a failure to consistently clear authentication metadata stored in ThreadLocal during certain error or incomplete authentication flows.
Specifically, after a GroupPrincipalCallback is persisted into the ThreadLocal, the authentication process may exit prematurely — before the ThreadLocal storage is cleared — if a mandatory CallerPrincipalCallback is missing or an exception occurs.
This allows a subsequent, unprivileged user processed by the same worker thread to inherit these residual security roles, leading to Broken Access Control and Privilege Escalation.
See also attached PDF.
Impact
An unauthenticated user may gain ungrated privileges from a previous request (privilege escalation).
Patches
No patches yet.
Workarounds
Do not use Jetty's JASPI.
Пакеты
org.eclipse.jetty.ee11:jetty-ee11-jaspi
>= 12.1.0, <= 12.1.7
12.1.8
org.eclipse.jetty.ee10:jetty-ee10-jaspi
>= 12.1.0, <= 12.1.7
12.1.8
org.eclipse.jetty.ee9:jetty-ee9-jaspi
>= 12.1.0, <= 12.1.7
12.1.8
org.eclipse.jetty.ee8:jetty-ee8-jaspi
>= 12.1.0, <= 12.1.7
12.1.8
org.eclipse.jetty.ee11:jetty-ee11-jaspi
>= 12.0.0, <= 12.0.33
12.0.34
org.eclipse.jetty.ee10:jetty-ee10-jaspi
>= 12.0.0, <= 12.0.33
12.0.34
org.eclipse.jetty.ee9:jetty-ee9-jaspi
>= 12.0.0, <= 12.0.33
12.0.34
org.eclipse.jetty.ee8:jetty-ee8-jaspi
>= 12.0.0, <= 12.0.33
12.0.34
org.eclipse.jetty:jetty-jaspi
>= 11.0.0, <= 11.0.28
11.0.29
org.eclipse.jetty:jetty-jaspi
>= 10.0.0, <= 10.0.28
10.0.29
org.eclipse.jetty:jetty-jaspi
>= 9.4.0, <= 9.4.60
9.4.61
Связанные уязвимости
In Eclipse Jetty, the class JASPIAuthenticator initiates the authentication checks, which set two ThreadLocal variable. Upon returning from the initial checks, there are conditions that cause an early return from the JASPIAuthenticator code without clearing those ThreadLocals. A subsequent request using the same thread inherits the ThreadLocal values, leading to a broken access control and privilege escalation.
In Eclipse Jetty, the class JASPIAuthenticator initiates the authentication checks, which set two ThreadLocal variable. Upon returning from the initial checks, there are conditions that cause an early return from the JASPIAuthenticator code without clearing those ThreadLocals. A subsequent request using the same thread inherits the ThreadLocal values, leading to a broken access control and privilege escalation.
In Eclipse Jetty, the class JASPIAuthenticator initiates the authentication checks, which set two ThreadLocal variable. Upon returning from the initial checks, there are conditions that cause an early return from the JASPIAuthenticator code without clearing those ThreadLocals. A subsequent request using the same thread inherits the ThreadLocal values, leading to a broken access control and privilege escalation.
In Eclipse Jetty, the class JASPIAuthenticator initiates the authentic ...
