CVE-2019-25004 — Unsound casting in flatbuffers — CVE Details

CRITICAL

Unsound casting in flatbuffers

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

Summary

The implementation of impl Follow for bool allows to reinterpret arbitrary bytes as a bool. In Rust bool has stringent requirements for its in-memory representation. Use of this function allows to violate these requirements and invoke undefined behaviour in safe code.

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 flatbuffers to 0.6.1 or later

cargo update -p flatbuffers --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
flatbuffers	crates.io	All versions	0.6.1

Vulnerability Classification

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

CWE-704
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-2019-25004?: Unsound casting in flatbuffers 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-2019-25004?: CVE-2019-25004 affects flatbuffers. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2019-25004 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-gx73-2498-r55c

RUSTSEC-2019-0028

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