#VU47742 Buffer overflow in crossbeam-channel - CVE-2020-15254

Vulnerability identifier: #VU47742

Vulnerability risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2020-15254

CWE-ID: CWE-119

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
crossbeam-channel
Universal components / Libraries / Programming Languages & Components

Vendor: Crossbeam

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error within the "Vec::from_iter" function in crossbeam-channel. A remote attacker can create a specially crafted data to the application, trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

crossbeam-channel: 0.3.1 - 0.4.3

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External links
https://github.com/crossbeam-rs/crossbeam/issues/539
https://github.com/crossbeam-rs/crossbeam/pull/533
https://github.com/crossbeam-rs/crossbeam/security/advisories/GHSA-v5m7-53cv-f3hx
https://github.com/RustSec/advisory-db/pull/425

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.