CVE-2021-28033 — Vulnerability in byte_struct — CVE Details

CRITICAL

Deserializing an array can free uninitialized memory in byte_struct

Published August 25, 2021Updated November 8, 2023Source: osv

Summary

Byte_struct stack and unpack structure as raw bytes with packed or bit field layout. An issue was discovered in the byte_struct crate before 0.6.1 for Rust. There can be a drop of uninitialized memory if a certain deserialization method panics.

Advisory Timeline

First published August 25, 2021 (1874 days ago).
Last revised November 8, 2023 — 804 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Cargo

Update byte_struct to 0.6.1 or later

cargo update -p byte_struct --precise 0.6.1

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: crates.io (1).

Package	Ecosystem	Affected	Fixed In
byte_struct	crates.io	All versions	0.6.1

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-119
Buffer OverflowMITRE
CWE-908
View on MITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.8 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

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

References

Frequently Asked Questions

What is CVE-2021-28033?: Deserializing an array can free uninitialized memory in byte_struct This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.8/10).
How do I check if my project is affected by CVE-2021-28033?: CVE-2021-28033 affects byte_struct. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2021-28033 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

9.8

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-8fgg-5v78-6g76

RUSTSEC-2021-0032

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