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RUSTSEC-2021-0029

Tape::take_bytes exposes uninitialized memory to a user-provided Read

Reported
Issued
Package
truetype (crates.io)
Type
Vulnerability
Categories
Aliases
References
CVSS Score
7.5 HIGH
CVSS Details
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Patched
  • >=0.30.1

Description

Affected versions of this crate passed an unininitialized buffer to a user-provided Read instance in Tape::take_bytes.

This can result in safe Read implementations reading from the uninitialized buffer leading to undefined behavior.

The flaw was corrected in commit 1f2dc7f37dd by removing the unsafe block and zero-initializing the buffer.

Advisory available under CC0-1.0 license.