CVE-2021-28032 — CRITICAL (9.8)

Vulnerability Description

An issue was discovered in the nano_arena crate before 0.5.2 for Rust. There is an aliasing violation in split_at because two mutable references can exist for the same element, if Borrow<Idx> behaves in certain ways. This can have a resultant out-of-bounds write or use-after-free.

CVSS Score

9.8

CRITICAL

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

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Nano Arena Project	Nano Arena	< 0.5.2

References

https://rustsec.org/advisories/RUSTSEC-2021-0031.htmlExploitPatchThird Party Advisory
https://rustsec.org/advisories/RUSTSEC-2021-0031.htmlExploitPatchThird Party Advisory

FAQ

What is CVE-2021-28032?

CVE-2021-28032 is a vulnerability with a CVSS score of 9.8 (CRITICAL). An issue was discovered in the nano_arena crate before 0.5.2 for Rust. There is an aliasing violation in split_at because two mutable references can exist for the same element, if Borrow<Idx> behaves ...

How severe is CVE-2021-28032?

CVE-2021-28032 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2021-28032?

Check the references section above for vendor advisories and patch information. Affected products include: Nano Arena Project Nano Arena.