Podcast Detail

SANS Stormcast Monday, December 8th, 2025: AutoIT3 FileInstall; React2Shell Update; Tika Vuln

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AutoIT3 FileInstall; React2Shell Update; Tika Vuln

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AutoIT3 Compiled Scripts Dropping Shellcodes
Malicious AutoIT3 scripts are usign the “FileInstall” function to include additional scripts at compile time that are dropped as temporary files during execution.
https://isc.sans.edu/diary/AutoIT3%20Compiled%20Scripts%20Dropping%20Shellcodes/32542

React2Shell Update
The race is on to patch vulnerable systems. Various groups are aggressively scanning the internet with different exploit variants. Some attempt to bypass WAFs.
https://blog.cloudflare.com/5-december-2025-outage/
https://aws.amazon.com/blogs/security/china-nexus-cyber-threat-groups-rapidly-exploit-react2shell-vulnerability-cve-2025-55182/

Apache Tika XXE Flaw
Apache’s Tika library patched a XXE flaw.
https://lists.apache.org/thread/s5x3k93nhbkqzztp1olxotoyjpdlps9k

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Discussion

The Shibboleth vulnerability is quite interesting. In their example, the SAML signature covers the entire and they've made modifications to it (the changes to the uid) that should cause the signature to fail validation. This vulnerability speaks to larger architectural issues with Shibboleth. Obviously the signature validation is happening on a DIFFERENT document (the inline DTD defs are resolved and replaced) than the attribute extraction code works on (the inline DTD variables are not replaced). This is a HUGE no no and leads to the confused deputy issues that caused the vulnerability. I would bet other SP SAML parsing code is making similar mistakes.

Posted by Anonymous on Tue Jan 16 2018, 16:54

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