PT-2022-20313 · Lighttpd+1 · Lighttpd+1

Mitd · Published 2021-02-05 · Updated 2023-08-08 · CVE-2022-30780

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions Lighttpd versions 1.4.56 through 1.4.58

Description The issue allows a remote attacker to cause a denial of service due to CPU consumption from stuck connections. This is because a typo in the connection read header more function in connections.c disrupts the use of multiple read operations on large headers. An unauthorized attacker can send an HTTP request with a URL that exceeds the maximum URL length, leading to a denial of service.

Recommendations For versions 1.4.56 through 1.4.58, update to a version that fixes the typo in the connection read header more function to prevent the denial of service issue. As a temporary workaround, consider restricting the maximum allowed URL length to prevent exploitation until a patch is available.

Exploit

Fix

DoS

Weakness Enumeration

CWE-682

Related Identifiers

ALT-PU-2021-1215

ALT-PU-2021-3356

CVE-2022-30780

Affected Products

Alt Linux

Lighttpd

References · 13

• 🔥 https://github.com/p0dalirius/CVE-2022-30780-lighttpd-denial-of-service · Exploit
• 🔥 https://podalirius.net/en/cves/2022-30780 · Exploit
• https://cve.org/CVERecord?id=CVE-2022-30780 · Security Note
• https://ubuntu.com/security/CVE-2022-30780 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2022-30780 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2022-30780 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2022-30780 · Vendor Advisory
• https://osv.dev/vulnerability/DEBIAN-CVE-2022-30780 · Vendor Advisory
• https://redmine.lighttpd.net/issues/3059 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2022-30780 · Vendor Advisory
• https://github.com/lighttpd/lighttpd1.4 · Note
• https://t.me/cvenotify/31475 · Telegram Post
• https://t.me/poxek/2338 · Telegram Post