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Published Jun. 30, 2025

CVE-2013-3587- enable of HTTP compression

Written By

Apsara Raheja

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Issue

  • Security vulnerability CVE-2013-3587 details a breach attack that is possible with the enable of HTTP compression and Deflate.

Steps to see the behvaior:

  • Navigate to any of the pages on the Liferay server.
  • Inspect the browser, open the network tab request, and check the accept-encoding header value.
    accept-encoding.png

Environment

  • Liferay DXP 2023.Q3

Resolution

  • The accept-encoding header highlighted in the above snapshot shows the browser’s Accept-Encoding and not DXP’s response which is not controlled from Liferay's end.
  • Regarding the HTTP compression, check the Tomcat/app server configuration and turn it off from there as well.
  • Please check the below property present in 'portal-ext.properties', which is disabled by default. If it persists, remove it or make it false.
     
    com.liferay.portal.servlet.filters.gzip.GZipFilter=true

 

 

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