CVE-2024-32974: Envoy affected by a crash in EnvoyQuicServerStream::OnInitialHeadersComplete()
First published: Tue Jun 04 2024(Updated: )
Envoy is a cloud-native, open source edge and service proxy. A crash was observed in `EnvoyQuicServerStream::OnInitialHeadersComplete()` with following call stack. It is a use-after-free caused by QUICHE continuing push request headers after `StopReading()` being called on the stream. As after `StopReading()`, the HCM's `ActiveStream` might have already be destroyed and any up calls from QUICHE could potentially cause use after free.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Envoy Proxy | <1.27.6 | |
| Envoy Proxy | >=1.28.0<1.28.4 | |
| Envoy Proxy | >=1.29.0<1.29.5 | |
| Envoy Proxy | >=1.30.0<1.30.2 |
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Frequently Asked Questions
What is the severity of CVE-2024-32974?
CVE-2024-32974 is classified as a high-severity vulnerability due to its potential for causing a crash.
How do I fix CVE-2024-32974?
To fix CVE-2024-32974, upgrade to Envoy Proxy versions higher than 1.27.6 or within specified safe versions.
What components are affected by CVE-2024-32974?
CVE-2024-32974 affects Envoy Proxy versions 1.27.6 and versions between 1.28.0 to 1.28.4, 1.29.0 to 1.29.5, and 1.30.0 to 1.30.2.
What causes the vulnerability CVE-2024-32974?
CVE-2024-32974 is caused by a use-after-free condition in the Envoy QUIC protocol handling.
How does CVE-2024-32974 impact application stability?
CVE-2024-32974 can lead to application instability due to potential crashes when processing QUIC request headers.
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