CVE-2024-34364 Envoy OOM vector from HTTP async client with unbounded response buffer for mirror response
Attackers can cause denial of service in Envoy proxy by triggering out-of-memory conditions via unbounded buffering of mirrored HTTP responses.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2024-34364?
CVE-2024-34364 is a medium-severity denial of service vulnerability in Envoyproxy Envoy, published on 4 Jun 2024. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
Envoy is a cloud-native, open source edge and service proxy. Envoy exposed an out-of-memory (OOM) vector from the mirror response, since async HTTP client will buffer the response with an unbounded buffer.
Which versions are affected by CVE-2024-34364?
1 open source package ship an affected version, including envoy. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
envoy Bitnami | All versions | 1.27.6, 1.28.4, 1.29.5, 1.30.2 |
Products include Envoyproxy Envoy.
How do I fix CVE-2024-34364?
Upgrade envoy to a fixed version for your release line: 1.27.6, 1.28.4, 1.29.5 or 1.30.2.
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-2024-34364 being exploited?
There is no known exploitation of CVE-2024-34364 in the wild and no public exploit code.
Other vulnerabilities in Envoyproxy Envoy
Sources
Also known as BIT-envoy-2024-34364, GHSA-xcj3-h7vf-fw26.