# CVE-2024-34362: Envoy affected by a crash (use-after-free) in EnvoyQuicServerStream

> An attacker can crash the Envoy proxy by sending specific QUIC frames, causing a denial of service.

- **Severity:** Medium 5.9 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 4 Jun 2024
- **Updated:** 19 Aug 2024
- **Also known as:** BIT-envoy-2024-34362, GHSA-hww5-43gv-35jv

## What is CVE-2024-34362?

CVE-2024-34362 is a medium-severity use after free vulnerability in Envoyproxy Envoy, published on 4 Jun 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Envoy is a cloud-native, open source edge and service proxy. There is a use-after-free in `HttpConnectionManager` (HCM) with `EnvoyQuicServerStream` that can crash Envoy. An attacker can exploit this vulnerability by sending a request without `FIN`, then a `RESET_STREAM` frame, and then after receiving the response, closing the connection.

Weakness: CWE-416 (Use After Free)

## Which versions are affected by CVE-2024-34362?

1 open source package ship an affected version, including envoy. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `envoy` | Bitnami | All versions | 1.27.6, 1.28.4, 1.29.5, 1.30.2 |

Products: Envoyproxy Envoy.

## How do I fix CVE-2024-34362?

Upgrade envoy to a fixed version for your release line: 1.27.6, 1.28.4, 1.29.5 or 1.30.2.

## Is CVE-2024-34362 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-34362 exists.

## Other vulnerabilities in Envoyproxy Envoy

- [CVE-2022-29226](https://insights.sbomify.com/CVE-2022-29226/): Trivial authentication bypass in Envoy (critical 10.0)
- [CVE-2019-18801](https://insights.sbomify.com/CVE-2019-18801/): Memory corruption in n/a (critical 9.8)
- [CVE-2019-18802](https://insights.sbomify.com/CVE-2019-18802/): Security feature bypass in n/a (critical 9.8)
- [CVE-2020-35470](https://insights.sbomify.com/CVE-2020-35470/): Information disclosure in n/a (high 8.8)
- [CVE-2024-23324](https://insights.sbomify.com/CVE-2024-23324/): Envoy ext auth can be bypassed when Proxy protocol filter sets invalid UTF-8 metadata (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-34362 and fix it if it is affected.

What it is: CVE-2024-34362 is a medium-severity use after free vulnerability in Envoyproxy Envoy, published on 4 Jun 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-34362 exists.

Affected packages and fixed versions:
- envoy (Bitnami): affected all versions; fixed in 1.27.6, 1.28.4, 1.29.5, 1.30.2

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2024-34362/ (Markdown: https://insights.sbomify.com/CVE-2024-34362/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-34362
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-34362
- OSV: https://osv.dev/vulnerability/CVE-2024-34362

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-34362/
Summaries are generated and may contain mistakes; the official description above is the record.