CVE-2007-4727

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    CVE-2007-4727

    Published: 12 Sept 2007Last Modified: 10 Apr 2026

    Summary:

    Details: 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."

    References: http://secunia.com/advisories/26732, http://secunia.com/advisories/26794, http://secunia.com/advisories/26824, http://secunia.com/advisories/26997, http://secunia.com/advisories/27229, http://secweb.se/en/advisories/lighttpd-fastcgi-remote-vulnerability/, http://www.novell.com/linux/security/advisories/2007_20_sr.html, http://www.vupen.com/english/advisories/2007/3110, https://bugzilla.redhat.com/show_bug.cgi?id=284511, http://fedoranews.org/updates/FEDORA-2007-213.shtml, http://securityreason.com/securityalert/3127, http://trac.lighttpd.net/trac/changeset/1986, http://www.gentoo.org/security/en/glsa/glsa-200709-16.xml, http://www.lighttpd.net/assets/2007/9/9/lighttpd_sa_2007_12.txt, http://www.securityfocus.com/archive/1/479763/100/0/threaded, http://www.securityfocus.com/bid/25622, https://exchange.xforce.ibmcloud.com/vulnerabilities/36526, https://issues.rpath.com/browse/RPL-1715

    Affected packages

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2007-4727 | CVE-DB