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由<span class='author'> <a href="~lukaszlenart.html" class="url fn">Lukasz Lenart</a></span>创建, 最终由<span class='editor'> <a href="~rgielen.html" class="url fn">René Gielen</a></span>修改于 <a class='last-modified' title='查看变更' href='javascript:;'>八月 08, 2019</a>
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<h2 id="S2022-Summary">Summary</h2>Extends excluded params in CookieInterceptor to avoid manipulation of Struts' internals<div class="table-wrap"><table class="wrapped confluenceTable"><colgroup><col><col></colgroup><tbody><tr><th class="confluenceTh"><p>Who should read this</p></th><td class="confluenceTd"><p>All Struts 2 developers and users</p></td></tr><tr><th class="confluenceTh"><p>Impact of vulnerability</p></th><td class="confluenceTd"><p>Possibility to change internal state of session, request, etc</p></td></tr><tr><th class="confluenceTh"><p>Maximum security rating</p></th><td class="confluenceTd"><p>Medium</p></td></tr><tr><th class="confluenceTh"><p>Recommendation</p></th><td class="confluenceTd"><p>Developers should immediately upgrade to <a href="download.html#struts2320" class="external-link" rel="nofollow">Struts 2.3.20</a></p></td></tr><tr><th class="confluenceTh"><p>Affected Software</p></th><td class="confluenceTd"><p>Struts 2.0.0 - Struts 2.3.16.3</p></td></tr><tr><th class="confluenceTh"><p>Reporter</p></th><td class="confluenceTd"><p>Zubair Ashraf of IBM X-Force</p></td></tr><tr><th class="confluenceTh"><p>CVE Identifier</p></th><td class="confluenceTd"><p><span style="line-height: 1.4285715;"><span style="color: rgb(34,34,34);">CVE-2014-0116</span> - </span><span style="line-height: 1.4285715;">Struts' internals manipulation via CookieInterceptor</span></p></td></tr></tbody></table></div><h2 id="S2022-Problem">Problem</h2><p>The excluded parameter pattern introduced in version 2.3.16.2 to block access to getClass() method didn't cover other cases and because of that attacker can change state of session, request and so on (when "*" is used to configure <code>cookiesName</code> param).</p><h2 id="S2022-Solution">Solution</h2><p>In Struts 2.3.20 the same exclude patterns were used in CookieInterceptor which are available in ParametersInterceptor. If you don't use CookieInterceptor you are safe.</p><h2 id="S2022-Backwardcompatibility">Backward compatibility</h2><p>No backward compatibility problems are expected.</p><h2 id="S2022-Workaround">Workaround</h2><h2 id="S2022-Ifyoucannotupgradetoversion2.3.20immediately-whichisstronglyadvised-don'tusewildcardmappingtoacceptcookienamesorimplementyourownversionofCookieInterceptorbasedoncodeprovidedinStruts2.3.20."><span style="font-size: 14.0px;line-height: 1.4285715;">If you cannot upgrade to version 2.3.20 immediately - <strong>which is strongly advised -</strong></span><span style="font-size: 14.0px;line-height: 1.4285715;"> don't use wildcard mapping to accept cookie names or implement your own version of CookieInterceptor based on code provided in Struts 2.3.20.</span></h2><p><span style="font-size: 14.0px;line-height: 1.4285715;"><br></span></p>
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