CVE-2012-5533
The http_request_split_value function in request.c in lighttpd before 1.4.32 allows remote...
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.
Exploit likelihood
What each source reports
NVD Score used
5.0
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.
- Record
CVE-2012-5533- CVSS 2.0
- 5.0 Medium
AV:N/AC:L/Au:N/C:N/I:N/A:P - Weakness
- CWE-399
- Updated
- 2026-11-02
CVE List No score
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.
- Record
CVE-2012-5533- Updated
- 2026-11-02
EUVDEUVD-2012-5425 No score
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.
- Record
EUVD-2012-5425- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-v87j-h4pq-fh3j No score
The http_request_split_value function in request.c in lighttpd before 1.4.32 allows remote...
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.
- Record
GHSA-v87j-h4pq-fh3j- Updated
- 2026-11-02
OSV No score
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.
- Record
CVE-2012-5533- Updated
- 2026-11-02
OSVDEBIAN-CVE-2012-5533 No score
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.
- Record
DEBIAN-CVE-2012-5533- Updated
- 2026-11-02
OSVopenSUSE-SU-2024:10402-1 No score
lighttpd-1.4.37-1.6 on GA media
These are all security issues fixed in the lighttpd-1.4.37-1.6 package on the GA media of openSUSE Tumbleweed.
- Record
openSUSE-SU-2024:10402-1- Updated
- 2026-11-02
Affected products
Affected packages
Public exploits
Links only. Every CVE stores no exploit code.
| Source | Link | Date |
|---|---|---|
| Exploit-DB | lighttpd 1.4.31 - Denial of Service (PoC) | 2012-11-22 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, Exploit-DB, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2012-5533 is a medium vulnerability (CVSS 5.0) in Lighttpd, published November 24, 2012. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 12.0%, the 96th percentile. Fixed in lighttpd 1.4.31-2.
References
openwall.com/lists/oss-security/2012/11/21/1
lists.opensuse.org/opensuse-updates/2012-11/msg00044.html
download.lighttpd.net/lighttpd/security/lighttpd_sa_2012_01.txt
exploit-db.com/exploits/22902
securitytracker.com/id?1027802
download.lighttpd.net/lighttpd/security/lighttpd-1.4.31_fix_connection_header_dos.patch
Show 21 moreShow less
packetstormsecurity.org/files/118282/Simple-Lighttpd-1.4.31-Denial-Of-Service.html
secunia.com/advisories/51268
wiki.mageia.org/en/Support/Advisories/MGASA-2012-0345
osvdb.org/87623
marc.info?l=bugtraq&m=141576815022399&w=2
mandriva.com/security/advisories?name=MDVSA-2013:100
exchange.xforce.ibmcloud.com/vulnerabilities/80213
secunia.com/advisories/51298
lists.opensuse.org/opensuse-updates/2014-01/msg00051.html
securityfocus.com/bid/56619
nvd.nist.gov/vuln/detail/CVE-2012-5533
github.com/advisories/GHSA-v87j-h4pq-fh3j
security-tracker.debian.org/tracker/CVE-2012-5533
suse.com/security/cve/CVE-2010-0295
suse.com/security/cve/CVE-2011-4362
suse.com/security/cve/CVE-2012-5533
suse.com/security/cve/CVE-2013-4508
suse.com/security/cve/CVE-2013-4559
suse.com/security/cve/CVE-2013-4560
suse.com/security/cve/CVE-2014-2323
suse.com/security/cve/CVE-2014-2324