Security restrictions bypass in Wasmtime

1) Incomplete list of disallowed inputs

EUVDB-ID: #VU100035

Risk: Low

CVSSv4.0: 1.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-51745

CWE-ID: CWE-184 - Incomplete List of Disallowed Inputs

Exploit availability: No

Description

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to improper validation of superscript digits in the device filenames when restricting access to them. A local user can bypass implemented sandbox restrictions and access devices through those special device filenames.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Wasmtime: 20.0.0 - 26.0.0

CPE2.3

• cpe:2.3:a:bytecode_alliance:wasmtime:20.0.0:*:*:*:*:*:*:*
• cpe:2.3:a:bytecode_alliance:wasmtime:20.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:bytecode_alliance:wasmtime:20.0.2:*:*:*:*:*:*:*

External links

https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-c2f5-jxjv-2hh8
https://github.com/bytecodealliance/cap-std/pull/371
https://github.com/bytecodealliance/wasmtime/releases/tag/v24.0.2
https://github.com/bytecodealliance/wasmtime/releases/tag/v26.0.1
https://github.com/bytecodealliance/wasmtime/releases/tag/v25.0.3

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.