Thursday, 18 October 2018

Sarketsdr

I am running a Glassfish server, and I recently noticed an application was deployed that I did not remember having deployed. The name of the application was completely unhelpful as being "Sarketsdr".

On closer inspection, the offending application contained a Java/JSP/JavaScript files, specifically to disclose the filesystem and grant shell access to persons unknown.

I've since removed the application and turned off the remote administration console. I plan on changing application servers, and keeping them properly updated.

I should also get some Intrusion Detection Systems going.

I've uploaded the files as gists.

File structure of Sarketsdr

File/DirectoryComments
aff.jsphttps://gist.github.com/maartenl/ddd99b927fc535a271b171a350fbe512
cj.jsphttps://gist.github.com/maartenl/dbfd8e11fb0767b06ee0f2d8c9d544bd
emu.jsphttps://gist.github.com/maartenl/549dc20a5229560e34cebf0c38e422b8
index.jsphttps://gist.github.com/maartenl/cc96faa3feb78fdeeaeff8cc12e0700b
mob.jsphttps://gist.github.com/maartenl/6deb7a1f277a6843ee34fe709b7ca5ec
META-INF
      context.xml
      MANIFEST.MF
WEB-INF
      web.xml

I am working on securing my Glassfish installation in the mean time.

References

Frage /etc/rc.d/init.d/wipefs startet das CPU-Problem
http://webirectory.com/questions/19967/etc-rc-d-init-d-wipefs-startet-das-cpu-problem
FortiGuard Labs - JSP.File.Browser
https://fortiguard.com/appcontrol/42719
vonloesch.de - Jsp File Browser
http://www.vonloesch.de/filebrowser.html

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