CVE-2022-30780 — Incorrect Calculation in Lighttpd

CWE-682 — Incorrect CalculationCWE-400 — Uncontrolled Resource Consumption6 documents6 sources
Severity
7.5HIGHNVD
EPSS
81.8%
top 0.80%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
LighttpdDebian Lighttpd
Timeline
PublishedJun 11
Latest updateOct 12

Description

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HExploitability: 3.9 | Impact: 3.6

Affected Packages3 packages

▶debiandebian/lighttpd< lighttpd 1.4.59-1 (bookworm)
▶Debianlighttpd/lighttpd< 1.4.59-1+3
▶NVDlighttpd/lighttpd1.4.56, 1.4.57, 1.4.58+2

Patches

Patch: redmine.lighttpd.net ↗Patch: redmine.lighttpd.net ↗

🔴Vulnerability Details

3
GHSA
GHSA-43hv-3rv7-ch5p: Lighttpd 1↗2022-06-12
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OSV
CVE-2022-30780: Lighttpd 1↗2022-06-11
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CVEList
CVE-2022-30780: Lighttpd 1↗2022-06-11
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📋Vendor Advisories

1
Debian
CVE-2022-30780: lighttpd - Lighttpd 1.4.56 through 1.4.58 allows a remote attacker to cause a denial of ser...↗2022
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📄Research Papers

1
arXiv
LineBreaker: Finding Token-Inconsistency Bugs with Large Language Models↗2025-10-12
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