krl/bunch · Security
Data races in bunch
- GHSA ID
- GHSA-jwph-qp5h-f9wj
- CVE ID
- CVE-2020-36450
- Severity
- high
- Published
- Updated
- CVSS
- 8.1 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS v3
- 8.1 · CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Description
An issue was discovered in the bunch crate through 2020-11-12 for Rust.
Affected versions of this crate unconditionally implements Send/Sync for Bunch<T>.
This allows users to insert T: !Sync to Bunch<T>. It is possible to create a data race to a T: !Sync by invoking the Bunch::get() API (which returns &T) from multiple threads. It is also possible to send T: !Send to other threads by inserting T inside Bunch<T> and sending Bunch<T> to another thread, allowing to create a data race by inserting types like T = Rc<_>.
Such data races can lead to memory corruption.
CWEs
- CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')
- CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')