Lighttpd mod_fastcgi Extension CGI Variable Overwriting Vulnerability

Publish date: February 10, 2011
  Severity: HIGH
  CVE Identifier: CVE-2007-4727
  Advisory Date: FEB 10, 2011

  DESCRIPTION

 Buffer overflow in the fcgi_env_add function in mod_proxy_backend_fastcgi.c in the mod_fastcgi extension in lighttpd before 1.4.18 allows remote attackers to overwrite arbitrary CGI variables and execute arbitrary code via an HTTP request with a long content length, as demonstrated by overwriting the SCRIPT_FILENAME variable, aka a "header overflow."

  TREND MICRO PROTECTION INFORMATION

Trend Micro Deep Security shields networks through Deep Packet Inspection (DPI) rules. Trend Micro customers using OfficeScan with Intrusion Defense Firewall (IDF) plugin are also protected from attacks using these vulnerabilities. Please refer to the filter number and filter name when applying appropriate DPI and/or IDF rules.

  SOLUTION

  Trend Micro Deep Security DPI Rule Number: 1002566
  Trend Micro Deep Security DPI Rule Name: 1002566 - Lighttpd mod_fastcgi Extension CGI Variable Overwriting Vulnerability

  AFFECTED SOFTWARE AND VERSION

  • lighttpd lighttpd 1.4.15

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