#VU32618 Input validation error in lighttpd - CVE-2012-5533
Published: November 24, 2012 / Updated: July 29, 2020
Vulnerability identifier: #VU32618
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2012-5533
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
lighttpd
lighttpd
Software vendor:
lighttpd
lighttpd
Description
The vulnerability allows remote attackers to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can 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.
Remediation
The vendor has issued the following versions to address this vulnerability: 1.4.31, 1.4.32.
External links
- http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2012_01.txt
- http://download.lighttpd.net/lighttpd/security/lighttpd-1.4.31_fix_connection_header_dos.patch
- 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