A resource leak in gw_backend.c in lighttpd 1.4.56 through 1.4.66 could lead to a denial of service (connection-slot exhaustion) after a large amount of anomalous TCP behavior by clients. It is related to RDHUP mishandling in certain HTTP/1.1 chunked situations. Use of mod_fastcgi is, for example, affected. This is fixed in 1.4.67.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | alpine-linux-upgrade-lighttpd | Mar 26, 2024 | Oct 6, 2022 | |
| Arch Linux | arch-linux-upgrade-latest | Jul 11, 2025 | Oct 6, 2022 | |
| Debian | debian-upgrade-lighttpd | Nov 4, 2022 | Oct 6, 2022 | |
| Gentoo Linux | gentoo-linux-upgrade-www-servers-lighttpd | Oct 31, 2022 | Oct 6, 2022 | |
| Http Lighttpd | http-lighttpd-upgrade-latest | Sep 19, 2024 | Oct 6, 2022 | |
| Suse | — | suse-upgrade-lighttpdsuse-upgrade-lighttpd-mod_authn_gssapisuse-upgrade-lighttpd-mod_authn_ldapsuse-upgrade-lighttpd-mod_authn_pamsuse-upgrade-lighttpd-mod_authn_saslsuse-upgrade-lighttpd-mod_magnetsuse-upgrade-lighttpd-mod_maxminddbsuse-upgrade-lighttpd-mod_rrdtoolsuse-upgrade-lighttpd-mod_vhostdb_dbisuse-upgrade-lighttpd-mod_vhostdb_ldapsuse-upgrade-lighttpd-mod_vhostdb_mysqlsuse-upgrade-lighttpd-mod_vhostdb_pgsqlsuse-upgrade-lighttpd-mod_webdav | Oct 26, 2022 | Oct 6, 2022 |
| Ubuntu | ubuntu-upgrade-lighttpd | Mar 22, 2023 | Oct 6, 2022 |
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