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RUSTSEC-2019-0028

Unsound impl Follow for bool

Reported
Issued
Package
flatbuffers (crates.io)
Type
Vulnerability
Aliases
References
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.