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CVE-2012-5533

The http_request_split_value function in request.c in lighttpd before 1.4.32 allows remote...

5.0 MediumPublic exploitFix available

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

12.0%Down 3.6 points since Feb 4, 2022
90%50%10%1%

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 MediumAV: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

Affected packages
PackageAffectedFixed
lighttpd
Debian:12
before 1.4.31-2
1.4.31-2
lighttpd
Debian:13
before 1.4.31-2
1.4.31-2
lighttpd
Debian:14
before 1.4.31-2
1.4.31-2
lighttpd
openSUSE:Tumbleweed
before 1.4.37-1.6
1.4.37-1.6

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
Exploit-DBlighttpd 1.4.31 - Denial of Service (PoC)2012-11-22

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE 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

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