CVE-2022-30780 : Lighttpd 1.4.56 through 1.4.58 allows a remote attacker to cause a denial of service (CPU consumption from stuck connect

Lighttpd 1.4.56 through 1.4.58 allows a remote attacker to cause a denial of service (CPU consumption from stuck connections) because connection_read_header_more in connections.c has a typo that disrupts use of multiple read operations on large headers.

Published 2022-06-11 15:15:09

Updated 2022-06-17 17:27:19

Source MITRE

View at NVD, CVE.org

Vulnerability category: Denial of service

Threat overview for CVE-2022-30780

Top countries where our scanners detected CVE-2022-30780

Top open port discovered on systems with this issue 80

IPs affected by CVE-2022-30780 8,272

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2022-30780!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2022-30780

Probability of exploitation activity in the next 30 days: 42.17%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 97 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2022-30780

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2022-30780

CWE-400 Uncontrolled Resource Consumption

The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2022-30780

https://github.com/p0dalirius/CVE-2022-30780-lighttpd-denial-of-service

GitHub - p0dalirius/CVE-2022-30780-lighttpd-denial-of-service: CVE-2022-30780 - lighttpd remote denial of service
Exploit;Third Party Advisory
https://podalirius.net/en/cves/2022-30780/

CVE-2022-30780 - Lighttpd - Denial of Service · Podalirius
Exploit;Third Party Advisory
https://redmine.lighttpd.net/issues/3059

Bug #3059: Connections stuck in Close_Wait causing 100% cpu usage - Lighttpd - lighty labs
Issue Tracking;Patch;Vendor Advisory
https://github.com/lighttpd/lighttpd1.4

GitHub - lighttpd/lighttpd1.4: lighttpd1.4 on github for easier collaboration - main repo still on lighttpd.net
Product;Third Party Advisory

Products affected by CVE-2022-30780