Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, an off-by-one write in Envoy::JsonEscaper::escapeString() can corrupt std::string null-termination, causing undefined behavior and potentially leading to crashes or out-of-bounds reads when the resulting string is later treated as a C-string. This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.
Weakness
A product calculates or uses an incorrect maximum or minimum value that is 1 more, or 1 less, than the correct value.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Envoy | Envoyproxy | * | 1.34.13 (excluding) |
| Envoy | Envoyproxy | 1.35.0 (including) | 1.35.8 (excluding) |
| Envoy | Envoyproxy | 1.36.0 (including) | 1.36.5 (excluding) |
| Envoy | Envoyproxy | 1.37.0 (including) | 1.37.0 (including) |