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Excerpt

Special top object can be used to access Struts' internals


Who should read this

All Struts 2 developers and users

Impact of vulnerability

Manipulation of Struts' internals, altering of user session

Maximum security rating

High

Important

Recommendation

Update regex used to excluded vulnerable incoming parameters. An upgrade to Struts 2.3.24.1 is recommended.

Affected Software

Struts 2.0.0 - Struts Struts 2.3.24

Reporter

rskvp93 at gmail dot com from Viettel Information Security Center

CVE Identifier

CVE-2015-5209

Problem

ValueStack defines special top object which represents root of execution context. It can be used to manipulate Struts' internals or can be used to affect container's settings

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