CVE Vulnerability

CVE-2020-15254

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.

7.5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

9.8 /10

CVSS v3.0 : CRITICAL

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://github.com/RustSec/advisory-db/pull/425 Patch Third Party Advisory
https://github.com/crossbeam-rs/crossbeam/security/advisories/GHSA-v5m7-53cv-f3hx Third Party Advisory
https://github.com/crossbeam-rs/crossbeam/issues/539 Exploit Third Party Advisory
https://github.com/crossbeam-rs/crossbeam/pull/533 Exploit Patch
Configurations

Configuration 1

cpe:2.3:a:crossbeam_project:crossbeam:*:*:*:*:*:*:*:*
Information

Published : 2020-10-16 05:15

Updated : 2022-08-05 07:30

NVD link : CVE-2020-15254

Mitre link : CVE-2020-15254

Products Affected
No products.
CWE
CWE-401