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Rstudio Shiny-Server Directory Traversal and Source Code Leak CVE-2021-3374

Rstudio Shiny-Server prior to 1.5.16 is vulnerable to directory traversal and source code leakage. This can be exploited by appending an encoded slash to the URL.

Direct

Proxied

References

Security notice from Rstudio https://web.archive.org/web/20210113222412/https://blog.rstudio.com/2021/01/13/shiny-server-1-5-16-update/

Similar vulnerability in Weblogic from 2001 https://web.archive.org/web/20210118180943/https://www.securityfocus.com/bid/2513/info

CVE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-3374

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