RUSTSEC-2019-0011

Flaw in offset_of and span_of causes SIGILL, drops uninitialized memory of arbitrary type on panic in client code

Reported

July 16, 2019

Issued

October 2, 2020 (last modified: October 19, 2021)

Package

memoffset (crates.io)

Type

INFO Unsound

Aliases

CVE-2019-15553

Details

https://github.com/Gilnaa/memoffset/issues/9#issuecomment-505461490

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

Patched

>=0.5.0

Description

Affected versions of this crate caused traps and/or memory unsafety by zero-initializing references. They also could lead to uninitialized memory being dropped if the field for which the offset is requested was behind a deref coercion, and that deref coercion caused a panic.

The flaw was corrected by using MaybeUninit.