#VU55598 Race condition in crossbeam-deque - CVE-2021-32810

Vulnerability identifier: #VU55598

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-2021-32810

CWE-ID: CWE-362

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
crossbeam-deque
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 race condition in the "Stealer::steal", "Stealer::steal_batch" and "Stealer::steal_batch_and_pop" functions. A remote attacker can exploit the race and gain unauthorized access to sensitive information and execute arbitrary code on the system.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

crossbeam-deque: 0.7.0 - 0.8.0

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External links
https://github.com/crossbeam-rs/crossbeam/security/advisories/GHSA-pqqp-xmhj-wgcw

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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.