advisory-db/crates/telemetry/RUSTSEC-2021-0046.md

[advisory]
id = "RUSTSEC-2021-0046"
package = "telemetry"
aliases = ["CVE-2021-29937"]
cvss = "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
date = "2021-02-17"
url = "https://github.com/Yoric/telemetry.rs/issues/45"
categories = ["memory-corruption"]
keywords = ["memory-safety"]

[versions]
patched = []

misc::vec_with_size() can drop uninitialized memory if clone panics

misc::vec_with_size creates a vector of the provided size and immediately calls vec.set_len(size) on it, initially filling it with uninitialized memory. It then inserts elements using vec[i] = value.clone().

If the value.clone() call panics, uninitialized items in the vector will be dropped leading to undefined behavior.