Reported

October 20, 2019

Issued

October 1, 2020 (last modified: June 13, 2023)

Package

flatbuffers (crates.io)

Type

Vulnerability

Aliases

• CVE-2019-25004
• GHSA-gx73-2498-r55c

References

• https://github.com/google/flatbuffers/issues/5530

CVSS Score

9.8 CRITICAL

CVSS Details

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

CVSS Vector

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

Patched

• >=0.6.1

Unaffected

• <0.4.0

Affected Functions

Version

flatbuffers::Follow::follow

• >=0.4.0
• <=0.6.0

Description

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 available under CC0-1.0 license.