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CVE-2024-51745

Bytecodealliance Wasmtime vulnerability

10.0 CRITICALEPSS 0.84%
  1. Published5 Nov 2024

Description

Wasmtime is a fast and secure runtime for WebAssembly. Wasmtime's filesystem sandbox implementation on Windows blocks access to special device filenames such as "COM1", "COM2", "LPT0", "LPT1", and so on, however it did not block access to the special device filenames which use superscript digits, such as "COM¹", "COM²", "LPT⁰", "LPT¹", and so on. Untrusted Wasm programs that are given access to any filesystem directory could bypass the sandbox and access devices through those special device filenames with superscript digits, and through them gain access peripheral devices connected to the computer, or network resources mapped to those devices. This can include modems, printers, network printers, and any other device connected to a serial or parallel port, including emulated USB serial ports. Patch releases for Wasmtime have been issued as 24.0.2, 25.0.3, and 26.0.1. Users of Wasmtime 23.0.x and prior are recommended to upgrade to one of these patched versions. There are no known workarounds for this issue. Affected Windows users are recommended to upgrade.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected products

Bytecodealliance Wasmtime25.0.0 · 25.0.1 · 25.0.2 · 26.0.0

Remediation

Fixed in
Bytecodealliance Wasmtime≥ 24.0.2

References

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Frequently asked

Is CVE-2024-51745 being actively exploited?

CVE-2024-51745 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.84%.

How severe is CVE-2024-51745?

CVE-2024-51745 has a CVSS 3.1 base score of 10.0, rated critical. EPSS estimates a 0.84% probability of exploitation.

Which products are affected by CVE-2024-51745?

Affected products include Bytecodealliance Wasmtime.

How do I fix CVE-2024-51745?

Upgrade affected software to a fixed version, for example Bytecodealliance Wasmtime 24.0.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.