CVE-2022-39393

Severity CVSS v4.0:

Pending analysis

Type:

CWE-226 Sensitive Information in Resource Not Removed Before Reuse

Publication date:

10/11/2022

Last modified:

02/05/2025

Description

Wasmtime is a standalone runtime for WebAssembly. Prior to versions 2.0.2 and 1.0.2, there is a bug in Wasmtime&#39;s implementation of its pooling instance allocator where when a linear memory is reused for another instance the initial heap snapshot of the prior instance can be visible, erroneously to the next instance. This bug has been patched and users should upgrade to Wasmtime 2.0.2 and 1.0.2. Other mitigations include disabling the pooling allocator and disabling the `memory-init-cow`.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 8.60 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Changed
Confidentiality (C): High
Integrity (I): None
Availability (A): None

Base Score 3.x

8.60

Severity 3.x

HIGH

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:bytecodealliance:wasmtime::::::rust::*		1.0.2 (excluding)
cpe:2.3:a:bytecodealliance:wasmtime::::::rust::*	2.0.0 (including)	2.0.2 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2022-39393

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools