CVE-2022-41556 Denial of service in n/a

What is CVE-2022-41556?

CVE-2022-41556 is a high-severity denial of service vulnerability in Fedoraproject Fedora, published on 6 Oct 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-401

Which versions are affected by CVE-2022-41556?

It affects 2 products.

Products include Fedoraproject Fedora, Lighttpd Lighttpd.

How do I fix CVE-2022-41556?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2022-41556 being exploited?

There is no known exploitation of CVE-2022-41556 in the wild and no public exploit code.

Other vulnerabilities in Fedoraproject Fedora

• CVE-2024-4577 PHP-CGI OS Command Injection Exploited Critical 9.8
• CVE-2021-39226 Grafana Authentication Bypass Exploited Critical 9.8
• CVE-2019-5544 VMware ESXi and Horizon DaaS OpenSLP Heap-Based Buffer Overflow Exploited Critical 9.8
• CVE-2024-4947 Google Chromium V8 Type Confusion Exploited Critical 9.6
• CVE-2024-4671 Google Chromium Visuals Use-After-Free Exploited Critical 9.6

All Fedoraproject Fedora vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2022-41556, DEBIAN-CVE-2022-41556, GHSA-jm88-vr5q-23rj, UBUNTU-CVE-2022-41556, openSUSE-SU-2022:10140-1, openSUSE-SU-2024:12382-1.