QwikSec

Security Database

CVE

CWE

Training

CVE-2020-15254

Published: Oct 16, 2020

Modified: Aug 4, 2024

PUBLISHED

CVSS v3.1

8.1

HIGH

Description

Crossbeam is a set of tools for concurrent programming. In crossbeam-channel before version 0.4.4, the bounded channel incorrectly assumes that `Vec::from_iter` has allocated capacity that same as the number of iterator elements. `Vec::from_iter` does not actually guarantee that and may allocate extra memory. The destructor of the `bounded` channel reconstructs `Vec` from the raw pointer based on the incorrect assumes described above. This is unsound and causing deallocation with the incorrect capacity when `Vec::from_iter` has allocated different sizes with the number of iterator elements. This has been fixed in crossbeam-channel 0.4.4.

Vendor	Product	Versions
crossbeam-rs	crossbeam	affected `< 0.4.4`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

https://github.com/crossbeam-rs/crossbeam/security/advisories/GHSA-v5m7-53cv-f3hx

x_refsource_CONFIRM

https://github.com/crossbeam-rs/crossbeam/issues/539

x_refsource_MISC

https://github.com/crossbeam-rs/crossbeam/pull/533

x_refsource_MISC

https://github.com/RustSec/advisory-db/pull/425

x_refsource_MISC

Security Training

Train your team to recognize and prevent security threats with our comprehensive security awareness program.

Vulnerability Scanning

Discover vulnerabilities in your applications and infrastructure before attackers do.