RUSTSEC-2021-0035

quinn invalidly assumes the memory layout of std::net::SocketAddr

Reported

March 4, 2021

Issued

March 4, 2021 (last modified: June 13, 2023)

Package

quinn (crates.io)

Type

INFO Unsound

Keywords

#memory #layout #cast

Aliases

References

https://github.com/quinn-rs/quinn/issues/968

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

^0.5.4
^0.6.2
>=0.7.0

Description

The quinn crate has assumed std::net::SocketAddrV4 and std::net::SocketAddrV6 have the same memory layout as the system C representation sockaddr. It has simply casted the pointers to convert the socket addresses to the system representation. The standard library does not say anything about the memory layout, and this will cause invalid memory access if the standard library changes the implementation. No warnings or errors will be emitted once the change happens.

Advisory available under CC0-1.0 license.