Vulnerability Monitor

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CVE-2022-41556

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.

Published

2022-10-06T18:17:03.620

Last Modified

2024-11-21T07:23:23.323

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

Weaknesses

Type: Primary
CWE-401

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	lighttpd	lighttpd	< 1.4.67	Yes
Operating System	fedoraproject	fedora	35	Yes

References

https://git.lighttpd.net/lighttpd/lighttpd1.4/commit/b18de6f9264f914f7bf493abd3b6059343548e50 Patch, Third Party Advisory ([email protected])
https://github.com/lighttpd/lighttpd1.4/compare/lighttpd-1.4.66...lighttpd-1.4.67 Third Party Advisory ([email protected])
https://github.com/lighttpd/lighttpd1.4/pull/115 Exploit, Issue Tracking, Third Party Advisory ([email protected])
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OVOSBSCMLGCHH2Z74H64ZWVDFJFQTBC2/ ([email protected])
https://security.gentoo.org/glsa/202210-12 Third Party Advisory ([email protected])
https://git.lighttpd.net/lighttpd/lighttpd1.4/commit/b18de6f9264f914f7bf493abd3b6059343548e50 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/lighttpd/lighttpd1.4/compare/lighttpd-1.4.66...lighttpd-1.4.67 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/lighttpd/lighttpd1.4/pull/115 Exploit, Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OVOSBSCMLGCHH2Z74H64ZWVDFJFQTBC2/ (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202210-12 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)