CVE-2012-5533

Public Exploit

Description

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.

Category

5.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 39.34% Top 5%
Vendor Advisory opensuse.org Vendor Advisory marc.info Vendor Advisory mandriva.com Vendor Advisory opensuse.org Vendor Advisory lighttpd.net Vendor Advisory secunia.com Vendor Advisory secunia.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.openwall.com/lists/oss-security/2012/11/21/1 mailing list
http://lists.opensuse.org/opensuse-updates/2012-11/msg00044.html vendor advisory
http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2012_01.txt vendor advisory
http://www.exploit-db.com/exploits/22902 exploit
http://www.securitytracker.com/id?1027802 vdb entry
http://download.lighttpd.net/lighttpd/security/lighttpd-1.4.31_fix_connection_header_dos.patch patch
http://packetstormsecurity.org/files/118282/Simple-Lighttpd-1.4.31-Denial-Of-Service.html
http://secunia.com/advisories/51268 third party advisory vendor advisory
https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0345
http://osvdb.org/87623 vdb entry
http://marc.info/?l=bugtraq&m=141576815022399&w=2 vendor advisory
http://www.mandriva.com/security/advisories?name=MDVSA-2013:100 vendor advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/80213 vdb entry
http://secunia.com/advisories/51298 third party advisory vendor advisory
http://lists.opensuse.org/opensuse-updates/2014-01/msg00051.html vendor advisory
http://www.securityfocus.com/bid/56619 vdb entry exploit

Frequently Asked Questions

What is the severity of CVE-2012-5533?
CVE-2012-5533 has been scored as a medium severity vulnerability.
How to fix CVE-2012-5533?
To fix CVE-2012-5533, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2012-5533 being actively exploited in the wild?
It is possible that CVE-2012-5533 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~39% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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