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CVE-2007-4727

6.8 · MEDIUM

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 e…

Published Sep 12, 2007lighttpdCWE-119EPSS 12.90%

Overview

CVE-2007-4727 is a medium-severity vulnerability affecting lighttpd lighttpd. It was published on September 12, 2007 and has a CVSS 2.0 base score of 6.8 (MEDIUM).

This vulnerability has a CVSS 2.0 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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."

Remediation

Check the references section for vendor advisories and patches from lighttpd. Update lighttpd to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
lighttpdlighttpd0Affected

References

Reffedoranews.org/updates/FEDORA-2007-213.shtmlRefsecunia.com/advisories/26732Refsecunia.com/advisories/26794Refsecunia.com/advisories/26824Refsecunia.com/advisories/26997Refsecunia.com/advisories/27229Refsecurityreason.com/securityalert/3127Refsecweb.se/en/advisories/lighttpd-fastcgi-remote-vulnerability/Reftrac.lighttpd.net/trac/changeset/1986Refwww.gentoo.org/security/en/glsa/glsa-200709-16.xml

How CyberStrike helps

Frequently asked questions

What is CVE-2007-4727?

CVE-2007-4727 is a medium-severity vulnerability affecting lighttpd lighttpd. It was published on September 12, 2007 and has a CVSS 2.0 base score of 6.8 (MEDIUM).

How severe is CVE-2007-4727?

This vulnerability has a CVSS 2.0 base score of 6.8, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2007-4727?

Check the references section for vendor advisories and patches from lighttpd. Update lighttpd to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2007-4727?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2007-4727 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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