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ac125ee29a3b934fc00f52bf56031dc837e9384d
advisory-db/crates/actix-service/RUSTSEC-2020-0046.md
Tony Arcieri ac125ee29a Translate database into V3 advisory format (#420) 
As proposed in #240 and tracked in #414, this PR translates all
advisories into the new "V3" advisory format, which is based on Markdown
with leading TOML front matter.

This format makes it easier to see rendered Markdown syntax
descriptions, whether rendered by an IDE or GitHub. This should help
with both crafting advisories initially as well as review, and ideally
encourages more lengthy descriptions.

Support for this format shipped in `cargo-audit` v0.12.0 on
May 6th, 2020.
2020-10-01 18:29:11 -07:00

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[advisory]
id = "RUSTSEC-2020-0046"
package = "actix-service"
categories = ["memory-corruption"]
date = "2020-01-08"
informational = "unsound"
url = "https://github.com/actix/actix-net/pull/158"

[versions]
patched = [">= 1.0.6"]

bespoke Cell implementation allows obtaining several mutable references to the same data

The custom implementation of a Cell primitive in the affected versions of this crate does not keep track of mutable references to the underlying data.

This allows obtaining several mutable references to the same object which may result in arbitrary memory corruption, most likely use-after-free.

The flaw was corrected by switching from a bespoke Cell<T> implementation to Rc<RefCell<T>>.