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      <title>CVE-2021-21247 — Post-Auth Unsafe Deserialization on BasePage (AJAX)</title>
      <link>https://cve.radiocsirt.org/vuln/cve-2021-21247</link>
      <description>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; theonedev onedev&lt;/p&gt;
&lt;p&gt;OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, the application&amp;#39;s BasePage registers an AJAX event listener (`AbstractPostAjaxBehavior`) in all pages other than the login page. This listener decodes and deserializes the `data` query parameter. We can access this listener by submitting a POST request to any page. This issue may lead to `post-auth RCE` This endpoint is subject to authentication and, therefore, requires a valid user to carry on the attack. This issue was addressed in 4.0.3 by encrypting serialization payload with secrets only known to server.&lt;/p&gt;</description>
      <content:encoded>&lt;p&gt;&lt;strong&gt;Affected:&lt;/strong&gt; theonedev onedev&lt;/p&gt;
&lt;p&gt;OneDev is an all-in-one devops platform. In OneDev before version 4.0.3, the application&amp;#39;s BasePage registers an AJAX event listener (`AbstractPostAjaxBehavior`) in all pages other than the login page. This listener decodes and deserializes the `data` query parameter. We can access this listener by submitting a POST request to any page. This issue may lead to `post-auth RCE` This endpoint is subject to authentication and, therefore, requires a valid user to carry on the attack. This issue was addressed in 4.0.3 by encrypting serialization payload with secrets only known to server.&lt;/p&gt;</content:encoded>
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