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.

CVSS v3.0 9.8 CRITICAL
CVSS v2.0 7.5 HIGH

9.8^/10

CVSS v3.0 : CRITICAL

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

7.5^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:P/I:P/A:P

Exploitability : 10.0 / Impact : 6.4

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

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 Third Party Advisory

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Configurations

Configuration 1 (hide)

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

Information

Published : 2020-10-16 10:15

Updated : 2022-08-05 12:30

NVD link : CVE-2020-15254

Mitre link : CVE-2020-15254

JSON object : View

CWE

CWE-401

Missing Release of Memory after Effective Lifetime

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Products Affected

crossbeam_project

crossbeam

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