CVE-2022-41881 HAProxyMessageDecoder Stack Exhaustion DoS
Attackers can cause a denial of service via infinite recursion when parsing malformed messages in the Netty network framework.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2022-41881?
CVE-2022-41881 is a medium-severity denial of service vulnerability in Debian Debian Linux, published on 12 Dec 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Netty project is an event-driven asynchronous network application framework. In versions prior to 4.1.86.Final, a StackOverflowError can be raised when parsing a malformed crafted message due to an infinite recursion. This issue is patched in version 4.1.86.Final. There is no workaround, except using a custom HaProxyMessageDecoder.
Weakness: CWE-674
Which versions are affected by CVE-2022-41881?
2 open source packages ship an affected version, including io.netty:netty-codec-haproxy. It affects 2 products.
| Package | Affected | Fixed in |
|---|---|---|
io.netty:netty-codec-haproxy Maven | All versions | 4.1.86.Final |
io.netty:netty-codec-haproxy Maven | All versions | 4.1.86.Final |
Products include Debian Debian Linux, Netty Netty.
How do I fix CVE-2022-41881?
Upgrade io.netty:netty-codec-haproxy to 4.1.86.Final or later.
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-2022-41881 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2022-41881 exists.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as CLEANSTART-2026-BT29481, CLEANSTART-2026-YG36157, DEBIAN-CVE-2022-41881, GHSA-fx2c-96vj-985v, MINI-jw43-5qv9-hjcg, OESA-2023-1905 and 6 more.