[seam-issues] [JBoss JIRA] Created: (JBSEAM-4804) JBoss Seam2 privilege escalation caused by EL interpolation in FacesMessages

[Marek Novotny (JIRA)]

JBoss Seam2 privilege escalation caused by EL interpolation in FacesMessages
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                 Key: JBSEAM-4804
                 URL: https://issues.jboss.org/browse/JBSEAM-4804
             Project: Seam 2
          Issue Type: Bug
          Components: Security
    Affects Versions: 2.2.1.Final, 2.0.2.SP1
            Reporter: Marek Novotny
            Assignee: Marek Novotny
            Priority: Blocker
             Fix For: 2.2.2.Final


Seam 2 does not properly block access to EL constructs in page exception
handling. This allowed arbitrary Java methods to be executed. A remote attacker
could use this flaw to execute arbitrary code via a URL, containing appended,
specially-crafted expression language parameters, provided to certain
applications based on the JBoss Seam framework. 

Note: A properly configured and enabled Java Security Manager would prevent
exploitation of this flaw.

Details are in https://www.redhat.com/security/data/cve/CVE-2011-1484.html

Seam team thanks Martin Kouba from IT SYSTEMS a.s. for reporting this issue.

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