HistoryEdit

RUSTSEC-2021-0029

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

Issued
Package
truetype (crates.io)
Type
Vulnerability
Categories
Aliases
Details
https://github.com/bodoni/truetype/issues/11
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.