| Package | Affected versions | Patched versions |
|---|---|---|
| envoy | ≥ 1.23.0, < 1.35.13≥ 1.36.0, < 1.36.9≥ 1.37.0, < 1.37.5≥ 1.38.0, < 1.38.3 | 1.35.131.36.91.37.51.38.3 |
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.
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