RUSTSEC-2019-0015

Flaw in generativity allows out-of-bounds access

Reported

May 21, 2019

Issued

October 1, 2020 (last modified: June 13, 2023)

Package

compact_arena (crates.io)

Type

Vulnerability

Categories

memory-corruption

Keywords

#uninitialized-memory

Aliases

References

https://github.com/llogiq/compact_arena/issues/22

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

>=0.4.0

Affected Functions

Version

compact_arena::SmallArena::new

<0.4.0

Description

Affected versions of this crate did not properly implement the generativity, because the invariant lifetimes were not necessarily dropped.

This allows an attacker to mix up two arenas, using indices created from one arena with another one. This might lead to an out-of-bounds read or write access into the memory reserved for the arena.

The flaw was corrected by implementing generativity correctly in version 0.4.0.

Advisory available under CC0-1.0 license.