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    CVE-2007-4727

    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."

    Published:Sep 12, 2007
    Last Modified:Apr 23, 2026
    EPS:Sep 12, 2007
    EPSS Score:0.18151
    CVSS Score:6.8

    Affected Products

    Vendor
    Lighttpd
    Product
    Lighttpd

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2025-8759 (CVSS 2.9) — A vulnerability was found in TRENDnet TN-200 1.02b02. It has been declared as problematic. This vulnerability …
    CVE-2018-25103 (CVSS 5.3) — There exists use-after-free vulnerabilities in lighttpd <= 1.4.50 request parsing which might read from invali…
    CVE-2022-41556 (CVSS 7.5) — A resource leak in gw_backend.c in lighttpd 1.4.56 through 1.4.66 could lead to a denial of service (connectio…
    CVE-2022-37797 (CVSS 7.5) — In lighttpd 1.4.65, mod_wstunnel does not initialize a handler function pointer if an invalid HTTP request (we…
    CVE-2022-30780 (CVSS 7.5) — Lighttpd 1.4.56 through 1.4.58 allows a remote attacker to cause a denial of service (CPU consumption from stu…
    CVE-2022-22707 (CVSS 5.9) — In lighttpd 1.4.46 through 1.4.63, the mod_extforward_Forwarded function of the mod_extforward plugin has a st…
    CVE-2019-11072 (CVSS 9.8) — lighttpd before 1.4.54 has a signed integer overflow, which might allow remote attackers to cause a denial of …
    CVE-2018-19052 (CVSS 7.5) — An issue was discovered in mod_alias_physical_handler in mod_alias.c in lighttpd before 1.4.50. There is poten…
    CVE-2015-3200 (CVSS 7.5) — mod_auth in lighttpd before 1.4.36 allows remote attackers to inject arbitrary log entries via a basic HTTP au…

    References

    http://fedoranews.org/updates/FEDORA-2007-213.shtml
    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://securityreason.com/securityalert/3127
    http://secweb.se/en/advisories/lighttpd-fastcgi-remote-vulnerability/
    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.novell.com/linux/security/advisories/2007_20_sr.html
    http://www.securityfocus.com/archive/1/479763/100/0/threaded
    http://www.securityfocus.com/bid/25622
    http://www.vupen.com/english/advisories/2007/3110
    https://bugzilla.redhat.com/show_bug.cgi?id=284511
    https://exchange.xforce.ibmcloud.com/vulnerabilities/36526
    https://issues.rpath.com/browse/RPL-1715
    http://fedoranews.org/updates/FEDORA-2007-213.shtml
    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://securityreason.com/securityalert/3127
    http://secweb.se/en/advisories/lighttpd-fastcgi-remote-vulnerability/
    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.novell.com/linux/security/advisories/2007_20_sr.html
    http://www.securityfocus.com/archive/1/479763/100/0/threaded
    http://www.securityfocus.com/bid/25622
    http://www.vupen.com/english/advisories/2007/3110
    https://bugzilla.redhat.com/show_bug.cgi?id=284511
    https://exchange.xforce.ibmcloud.com/vulnerabilities/36526
    https://issues.rpath.com/browse/RPL-1715

    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