CVE-2022-39393

Wasmtime is a standalone runtime for WebAssembly. Prior to version 2.0.2, there is a bug in Wasmtime'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. Other mitigations include disabling the pooling allocator and disabling the `memory-init-cow`.

CVSS v3.0 8.6 HIGH

8.6^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 3.9 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/bytecodealliance/wasmtime/commit/2614f2e9d2d36805ead8a8da0fa0c6e0d9e428a0	Patch Third Party Advisory
https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-wh6w-3828-g9qf	Third Party Advisory

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:bytecodealliance:wasmtime::::::rust::*
	cpe:2.3:a:bytecodealliance:wasmtime::::::rust::*

Information

Published : 2022-11-10 12:15

Updated : 2022-11-17 08:01

NVD link : CVE-2022-39393

Mitre link : CVE-2022-39393

JSON object : View

CWE

CWE-212

Improper Removal of Sensitive Information Before Storage or Transfer

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Products Affected

bytecodealliance

wasmtime

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