CVE-2018-20993

An issue was discovered in the yaml-rust crate before 0.4.1 for Rust. There is uncontrolled recursion during deserialization.

An issue was discovered in the yaml-rust crate before 0.4.1 for Rust. There is uncontrolled recursion during deserialization.

Affected versions of this crate did not prevent deep recursion while deserializing data structures. This allows an attacker to make a YAML file with deeply nested structures that causes an abort while deserializing it. The flaw was corrected by checking the recursion depth. Note: `clap 2.33` is not affected by this because it uses `yaml-rust` in a way that doesn't trigger the vulnerability. More specifically: 1. The input to the YAML parser is always trusted - is included at compile time via `include_str!`. 2. The nesting level is never deep enough to trigger the overflow in practice (at most 5).

Affected versions of this crate did not prevent deep recursion while deserializing data structures. This allows an attacker to make a YAML file with deeply nested structures that causes an abort while deserializing it. The flaw was corrected by checking the recursion depth.

Se descubrió un problema en el paquete (crate) yaml-rust versiones anteriores a 0.4.1 para Rust. Se presenta una recursión no controlada durante la deserialización.