CVE-2012-5533 EXPLOIT
5.0
MEDIUM · CVSS 2.0 · EPSS 12% (pctl 96)
Patch early
A public exploit exists.
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.
Scoring
| CVSS | 5.0 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:N/I:N/A:P |
| EPSS | 12.04% — more likely to be exploited than 96% of all CVEs |
| Weakness | CWE-399 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2012-11-24 |
| Last modified | 2026-06-16 |
Affected (1)
| Vendor | Product |
|---|---|
| lighttpd | lighttpd |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | lighttpd 1.4.31 - Denial of Service (PoC) | 2012-11-22 |
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
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