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.

CVSS v3.0 7.5 HIGH

7.5^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/lighttpd/lighttpd1.4/pull/115	Exploit Issue Tracking Third Party Advisory
https://git.lighttpd.net/lighttpd/lighttpd1.4/commit/b18de6f9264f914f7bf493abd3b6059343548e50	Patch Third Party Advisory
https://github.com/lighttpd/lighttpd1.4/compare/lighttpd-1.4.66...lighttpd-1.4.67	Third Party Advisory
https://security.gentoo.org/glsa/202210-12	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OVOSBSCMLGCHH2Z74H64ZWVDFJFQTBC2/	Mailing List Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:lighttpd:lighttpd:*:*:*:*:*:*:*:*

Configuration 2 (hide)

cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*

Information

Published : 2022-10-06 11:17

Updated : 2022-12-02 17:14

NVD link : CVE-2022-41556

Mitre link : CVE-2022-41556

JSON object : View

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

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Products Affected

fedoraproject

fedora

lighttpd

lighttpd

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