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    CVE-2012-5533

    The http_request_split_value function in request.c in lighttpd before 1.4.32 allows remote attackers to cause a denial of service (infinite loop) via a request with a header containing an empty token, as demonstrated using the "Connection: TE,,Keep-Alive" header.

    Published:Nov 24, 2012
    Last Modified:Apr 11, 2025
    EPS:Nov 24, 2012
    EPSS Score:0.37625
    CVSS Score:5

    Affected Products

    Vendor
    Lighttpd
    Product
    Lighttpd

    Exploits

    http://www.exploit-db.com/exploits/22902http://www.securityfocus.com/bid/56619http://www.exploit-db.com/exploits/22902http://www.securityfocus.com/bid/56619https://www.exploit-db.com/exploits/22902

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2025-12642 (CVSS 6.9) — lighttpd1.4.80 incorrectly merged trailer fields into headers after http request parsing. This behavior can be…
    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://download.lighttpd.net/lighttpd/security/lighttpd-1.4.31_fix_connection_header_dos.patch
    http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2012_01.txt
    http://lists.opensuse.org/opensuse-updates/2012-11/msg00044.html
    http://lists.opensuse.org/opensuse-updates/2014-01/msg00051.html
    http://marc.info/?l=bugtraq&m=141576815022399&w=2
    http://osvdb.org/87623
    http://packetstormsecurity.org/files/118282/Simple-Lighttpd-1.4.31-Denial-Of-Service.html
    http://secunia.com/advisories/51268
    http://secunia.com/advisories/51298
    http://www.exploit-db.com/exploits/22902
    http://www.mandriva.com/security/advisories?name=MDVSA-2013:100
    http://www.openwall.com/lists/oss-security/2012/11/21/1
    http://www.securityfocus.com/bid/56619
    http://www.securitytracker.com/id?1027802
    https://exchange.xforce.ibmcloud.com/vulnerabilities/80213
    https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0345
    http://download.lighttpd.net/lighttpd/security/lighttpd-1.4.31_fix_connection_header_dos.patch
    http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2012_01.txt
    http://lists.opensuse.org/opensuse-updates/2012-11/msg00044.html
    http://lists.opensuse.org/opensuse-updates/2014-01/msg00051.html
    http://marc.info/?l=bugtraq&m=141576815022399&w=2
    http://osvdb.org/87623
    http://packetstormsecurity.org/files/118282/Simple-Lighttpd-1.4.31-Denial-Of-Service.html
    http://secunia.com/advisories/51268
    http://secunia.com/advisories/51298
    http://www.exploit-db.com/exploits/22902
    http://www.mandriva.com/security/advisories?name=MDVSA-2013:100
    http://www.openwall.com/lists/oss-security/2012/11/21/1
    http://www.securityfocus.com/bid/56619
    http://www.securitytracker.com/id?1027802
    https://exchange.xforce.ibmcloud.com/vulnerabilities/80213
    https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0345

    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