CVE catalog

CVE-2022-41556

lighttpd: CVE-2022-41556

Severity: High · CVSS 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:P/RL:O/RC:C
Published: Sep 29, 2022, 10:00:00 PM UTC
Source: [NVD] · [CVE record]
EPSS: 3.80% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	lighttpd	sid	`1.4.85-1`	fixed
Debian	lighttpd	forky	`1.4.85-1`	fixed
Debian	lighttpd	trixie	`1.4.79-2`	fixed
Debian	lighttpd	bookworm	`1.4.69-1`	fixed
Ubuntu	lighttpd	pro	`1.4.31-3ubuntu3`	vulnerable
Ubuntu	lighttpd	pro	`1.4.33-1ubuntu1`	vulnerable
Ubuntu	lighttpd	pro	`1.4.33-1+nmu2ubuntu1`	vulnerable
Ubuntu	lighttpd	pro	`1.4.33-1+nmu2ubuntu2`	vulnerable
Ubuntu	lighttpd	pro	`1.4.33-1+nmu2ubuntu2.1`	vulnerable
Ubuntu	lighttpd	pro	`1.4.33-1+nmu2ubuntu2.1+esm1`	vulnerable
Ubuntu	lighttpd	22.04	`1.4.59-1ubuntu2`	vulnerable
Ubuntu	lighttpd	22.04	`1.4.59-1ubuntu3`	vulnerable
Ubuntu	lighttpd	22.04	`1.4.63-1ubuntu1`	vulnerable
Ubuntu	lighttpd	22.04	`1.4.63-1ubuntu2`	vulnerable
Ubuntu	lighttpd	22.04	`1.4.63-1ubuntu3`	vulnerable
Ubuntu	lighttpd	22.04	`1.4.63-1ubuntu3.1`	fixed
Opensuse	lighttpd	tumbleweed	`1.4.67-2.1`	fixed
Suse	lighttpd	package hub 15 sp3	`1.4.67-bp154.2.6.1`	fixed
Suse	lighttpd	package hub 15 sp4	`1.4.67-bp154.2.6.1`	fixed
Opensuse	lighttpd	leap 15.3	`1.4.67-bp154.2.6.1`	fixed
Opensuse	lighttpd	leap 15.4	`1.4.67-bp154.2.6.1`	fixed

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	lighttpd	source	sid	`1.4.67-1`	not yet assigned	Not reported	Not reported
Debian	lighttpd	source	forky	`1.4.67-1`	not yet assigned	Not reported	Not reported
Debian	lighttpd	source	trixie	`1.4.67-1`	not yet assigned	Not reported	Not reported
Debian	lighttpd	source	bookworm	`1.4.67-1`	not yet assigned	Not reported	Not reported
Ubuntu	lighttpd	deb	22.04	`1.4.63-1ubuntu3.1`	Not reported	UBUNTU-CVE-2022-41556	Not reported
Opensuse	lighttpd	rpm	tumbleweed	`1.4.67-2.1`	Not reported	OPENSUSE-SU-2024:12382-1	Not reported
Suse	lighttpd	rpm	package hub 15 sp3	`1.4.67-bp154.2.6.1`	Not reported	OPENSUSE-SU-2022:10140-1	Not reported
Suse	lighttpd	rpm	package hub 15 sp4	`1.4.67-bp154.2.6.1`	Not reported	OPENSUSE-SU-2022:10140-1	Not reported
Opensuse	lighttpd	rpm	leap 15.3	`1.4.67-bp154.2.6.1`	Not reported	OPENSUSE-SU-2022:10140-1	Not reported
Opensuse	lighttpd	rpm	leap 15.4	`1.4.67-bp154.2.6.1`	Not reported	OPENSUSE-SU-2022:10140-1	Not reported

OpenFactory catalog packages

[openSUSE Tumbleweed]

[lighttpd-mod_authn_dbi]Unknown
Source package: [lighttpd]
Details (1)
- 1.4.85-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.4.67-2.1
  Version impact unknown
  dsa · lighttpd · opensuse · tumbleweed
[lighttpd-mod_authn_gssapi]Unknown
Source package: [lighttpd]
Details (1)
- 1.4.85-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.4.67-2.1
  Version impact unknown
  dsa · lighttpd · opensuse · tumbleweed
[lighttpd-mod_authn_ldap]Unknown
Source package: [lighttpd]
Details (1)
- 1.4.85-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.4.67-2.1
  Version impact unknown
  dsa · lighttpd · opensuse · tumbleweed
[lighttpd-mod_authn_pam]Unknown
Source package: [lighttpd]
Details (1)
- 1.4.85-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.4.67-2.1
  Version impact unknown
  dsa · lighttpd · opensuse · tumbleweed
[lighttpd-mod_authn_sasl]Unknown
Source package: [lighttpd]
Details (1)
- 1.4.85-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.4.67-2.1
  Version impact unknown
  dsa · lighttpd · opensuse · tumbleweed
[lighttpd-mod_deflate]Unknown
Source package: [lighttpd]
Details (1)
- 1.4.85-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.4.67-2.1
  Version impact unknown
  dsa · lighttpd · opensuse · tumbleweed
[lighttpd-mod_gnutls]Unknown
Source package: [lighttpd]
Details (1)
- 1.4.85-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.4.67-2.1
  Version impact unknown
  dsa · lighttpd · opensuse · tumbleweed
[lighttpd-mod_magnet]Unknown
Source package: [lighttpd]
Details (1)
- 1.4.85-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.4.67-2.1
  Version impact unknown
  dsa · lighttpd · opensuse · tumbleweed
[lighttpd-mod_maxminddb]Unknown
Source package: [lighttpd]
Details (1)
- 1.4.85-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.4.67-2.1
  Version impact unknown
  dsa · lighttpd · opensuse · tumbleweed
[lighttpd-mod_mbedtls]Unknown
Source package: [lighttpd]
Details (1)
- 1.4.85-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.4.67-2.1
  Version impact unknown
  dsa · lighttpd · opensuse · tumbleweed
[lighttpd-mod_nss]Unknown
Source package: [lighttpd]
Details (1)
- 1.4.85-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.4.67-2.1
  Version impact unknown
  dsa · lighttpd · opensuse · tumbleweed
[lighttpd-mod_openssl]Unknown
Source package: [lighttpd]
Details (1)
- 1.4.85-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.4.67-2.1
  Version impact unknown
  dsa · lighttpd · opensuse · tumbleweed
[lighttpd-mod_rrdtool]Unknown
Source package: [lighttpd]
Details (1)
- 1.4.85-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.4.67-2.1
  Version impact unknown
  dsa · lighttpd · opensuse · tumbleweed
[lighttpd-mod_vhostdb_dbi]Unknown
Source package: [lighttpd]
Details (1)
- 1.4.85-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.4.67-2.1
  Version impact unknown
  dsa · lighttpd · opensuse · tumbleweed
[lighttpd-mod_vhostdb_ldap]Unknown
Source package: [lighttpd]
Details (1)
- 1.4.85-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.4.67-2.1
  Version impact unknown
  dsa · lighttpd · opensuse · tumbleweed
[lighttpd-mod_vhostdb_mysql]Unknown
Source package: [lighttpd]
Details (1)
- 1.4.85-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.4.67-2.1
  Version impact unknown
  dsa · lighttpd · opensuse · tumbleweed
[lighttpd-mod_vhostdb_pgsql]Unknown
Source package: [lighttpd]
Details (1)
- 1.4.85-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.4.67-2.1
  Version impact unknown
  dsa · lighttpd · opensuse · tumbleweed
[lighttpd-mod_webdav]Unknown
Source package: [lighttpd]
Details (1)
- 1.4.85-1.2 · x86_64 · tumbleweed
  Unknown · Fixed: 1.4.67-2.1
  Version impact unknown
  dsa · lighttpd · opensuse · tumbleweed

[Debian 12 (Bookworm)]

[lighttpd]Fixed
Details (2)
- 1.4.69-1 · amd64 · bookworm
  Fixed · Fixed: 1.4.67-1
  dsa · lighttpd · debian · bookworm
- 1.4.69-1 · arm64 · bookworm
  Fixed · Fixed: 1.4.67-1
  dsa · lighttpd · debian · bookworm
[lighttpd-doc]Fixed
Source package: [lighttpd]
Details (2)
- 1.4.69-1 · all · bookworm
  Fixed · Fixed: 1.4.67-1
  dsa · lighttpd · debian · bookworm
- 1.4.69-1 · all · bookworm
  Fixed · Fixed: 1.4.67-1
  dsa · lighttpd · debian · bookworm

Next results

Observed: Oct 23, 2026, 6:29:57 PM UTC

References

[CERT-Bund public advisories] · [CISA cybersecurity advisories] · [Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]