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Sitecore 8.x Deserialization Remote Code Execution

Sitecore 8.x Deserialization Remote Code Execution
Posted Jun 13, 2019
Authored by Jarad Kopf

Sitecore versions 8.x suffer from a deserialization vulnerability that allows for remote code execution.

tags | exploit, remote, code execution
advisories | CVE-2019-11080
MD5 | e987669019c3f7e3a64c75ccc23f404e

Sitecore 8.x Deserialization Remote Code Execution

Change Mirror Download
# Exploit Title: Sitecore v 8.x Deserialization RCE
# Date: Reported to vendor October 2018, fix released April 2019.
# Exploit Author: Jarad Kopf
# Vendor Homepage: https://www.sitecore.com/
# Software Link: Sitecore downloads: https://dev.sitecore.net/Downloads.aspx
# Version: Sitecore 8.0 Revision 150802
# Tested on: Windows
# CVE : CVE-2019-11080

Exploit:

Authentication is needed for this exploit. An attacker needs to login to Sitecore 8.0 revision 150802's Admin section.
When choosing to Serializeusers or domains in the admin UI, calls to /sitecore/shell/~/xaml/Sitecore.Shell.Applications.Dialogs.Progress.aspx will include a CSRFTOKEN parameter.
By replacing this parameter with a URL-encoded, base64-encoded crafted payload from ysoserial.net, an RCE is successful.

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