HistoryEdit

RUSTSEC-2020-0128

Cache: Send/Sync impls needs trait bounds on K

Reported
Issued
Package
cache (crates.io)
Type
Vulnerability
Categories
Aliases
Details
https://github.com/krl/cache/issues/1
CVSS Score
8.1 HIGH
CVSS Details
Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Patched
no patched versions

Description

Affected versions of this crate unconditionally implement Send/Sync for Cache<K>. This allows users to insert K that is not Send or not Sync.

This allows users to create data races by using non-Send types like Arc<Cell<T>> or Rc<T> as K in Cache<K>. It is also possible to create data races by using types like Cell<T> or RefCell<T> (types that are Send but not Sync). Such data races can lead to memory corruption.