Arbitrary Command Execution Affecting com.opensymphony:xwork-core package, versions [2.1.4,2.1.6)
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Test your applications- Snyk ID SNYK-JAVA-COMOPENSYMPHONY-30322
- published 9 Jun 2010
- disclosed 9 Jun 2010
- credit Meder Kydyraliev
Overview
com.opensymphony:xwork-core is an command-pattern framework that is used to power WebWork as well as other applications. XWork provides an Inversion of Control container, a powerful expression language, data type conversion, validation, and pluggable configuration.
The OGNL extensive expression evaluation capability in XWork in Struts 2.0.0 through 2.1.8.1, as used in Atlassian Fisheye, Crucible, and possibly other products, uses a permissive whitelist, which allows remote attackers to modify server-side context objects and bypass the "#" protection mechanism in ParameterInterceptors via the (1) #context, (2) #_memberAccess, (3) #root, (4) #this, (5) #_typeResolver, (6) #_classResolver, (7) #_traceEvaluations, (8) #_lastEvaluation, (9) #_keepLastEvaluation, and possibly other OGNL context variables, a different vulnerability than CVE-2008-6504.