CVE-2022-41556

2022-10-0618:17:03

CWE-401

[email protected]

web.nvd.nist.gov

resource leak

denial of service

http/1.1

chunked

rdhup

mishandling

mod_fastcgi

lighttpd

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.002

Percentile

62.2%

JSON

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.

Affected configurations

Nvd

Node

lighttpdlighttpdRange1.4.56–1.4.67

Node

fedoraprojectfedoraMatch35

VendorProductVersionCPE
lighttpdlighttpd*cpe:2.3:a:lighttpd:lighttpd:*:*:*:*:*:*:*:*
fedoraprojectfedora35cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*