Description
Envoy is an open source edge and service proxy designed for cloud-native applications. From 1.23.0 until 1.35.11, 1.36.7, 1.37.3, and 1.38.1, a vulnerability has been identified in Envoy's zstd decompressor implementation (ZstdDecompressorImpl). When zstd decompression is enabled, processing a specially crafted, highly compressed zstd payload can lead to massive memory allocation. An attacker can exploit this to cause severe memory exhaustion, potentially resulting in an Out-Of-Memory (OOM) kill and Denial of Service (DoS) for the Envoy proxy. This vulnerability is fixed in 1.35.11, 1.36.7, 1.37.3, and 1.38.1.
Problem types
CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)
Product status
>= 1.37.0, < 1.37.3
>= 1.36.0, < 1.36.7
>= 1.23.0, < 1.35.11
References
github.com/.../envoy/security/advisories/GHSA-m3p9-47wh-88wg