Reliance on undefined behavior in Wasmtime



Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-30624
CWE-ID CWE-758
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Wasmtime
Web applications / Modules and components for CMS

Vendor Bytecode Alliance

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Reliance on undefined behavior

EUVDB-ID: #VU75586

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2023-30624

CWE-ID: CWE-758 - Reliance on Undefined, Unspecified, or Implementation-Defined Behavior

Exploit availability: No

Description

The vulnerability allows a remote attacker to influence application's behavior.

The vulnerability exists due to LLVM-level undefined behavior when managing per-instance state. A remote attacker can leverage this vulnerability to cause runtime-level issues when compiled with LLVM 16, which can influence application behavior.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Wasmtime: 6.0.0 - 8.0.0

CPE2.3 External links

https://github.com/bytecodealliance/wasmtime/commit/0977952dcd9d482bff7c288868ccb52769b3a92e
https://github.com/bytecodealliance/wasmtime/security/advisories/GHSA-ch89-5g45-qwc7


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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



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