CVE-2012-5533
The http_request_split_value function in request.c in lighttpd before 1.4.32 allows remote attackers to cause a denial of service…
- Published
- Updated
- Reserved
- Assigned by
- redhat
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.
Public exploit
A reference of the record is tagged as an exploit or proof of concept: anyone can try it against an unpatched system.
- 22902 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
Timeline
ID reserved
By redhat
- 31 days later
· 31 days later
Published
- 12 years later
· 12 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 2.0 | Medium5.0 | AV:N/AC:L/Au:N/C:N/I:N/A:P |
- EPSS (exploitation in 30 days)
- 12.0% · top 3.8% of all CVEs (8 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.0.
Weakness
Affected products
n/a
- affected n/a
References (16)
- [oss-security] 20121121 lighttpd 1.4.32 released, fixing CVE-2012-5533 (opens in a new tab)mailing-listx_refsource_MLISTx_transferred
- openSUSE-SU-2012:1532 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- http://download.lighttpd.net/lighttpd/security/lighttpd_sa_2012_01.txt (opens in a new tab)x_refsource_CONFIRMx_transferred
- 22902 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- 1027802 (opens in a new tab)vdb-entryx_refsource_SECTRACKx_transferred
- http://download.lighttpd.net/lighttpd/security/lighttpd-1.4.31_fix_connection_header_dos.patch (opens in a new tab)x_refsource_MISCx_transferred
- http://packetstormsecurity.org/files/118282/Simple-Lighttpd-1.4.31-Denial-Of-Service.html (opens in a new tab)x_refsource_MISCx_transferred
- 51268 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- https://wiki.mageia.org/en/Support/Advisories/MGASA-2012-0345 (opens in a new tab)x_refsource_CONFIRMx_transferred
- 87623 (opens in a new tab)vdb-entryx_refsource_OSVDBx_transferred
- HPSBGN03191 (opens in a new tab)vendor-advisoryx_refsource_HPx_transferred
- MDVSA-2013:100 (opens in a new tab)vendor-advisoryx_refsource_MANDRIVAx_transferred
- lighttpd-httprequestsplitvalue-dos(80213) (opens in a new tab)vdb-entryx_refsource_XFx_transferred
- 51298 (opens in a new tab)third-party-advisoryx_refsource_SECUNIAx_transferred
- openSUSE-SU-2014:0074 (opens in a new tab)vendor-advisoryx_refsource_SUSEx_transferred
- 56619 (opens in a new tab)vdb-entryx_refsource_BIDx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2012-5533)Record last updated .