Arbitrary Code Execution Affecting com.opensymphony:xwork-core package, versions [2.1.4,2.1.6)


0.0
critical

Snyk CVSS

    Exploit Maturity Mature
    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High
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NVD
9.8 critical

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  • Snyk ID SNYK-JAVA-COMOPENSYMPHONY-30324
  • published 22 Jan 2012
  • disclosed 22 Jan 2012
  • 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.

OGNL provides, among other features, extensive expression evaluation capabilities. The vulnerability allows a malicious user to bypass all the protections (regex pattern, deny method invocation) built into the ParametersInterceptor, thus being able to inject a malicious expression in any exposed string variable for further evaluation.