CVE-2024-32973: Remote for TLS session may be trusted despite constraints in Pluto lang

Severity: medium (CVSS 4.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2024-05-01 · updated 2026-06-17
Weakness: CWE-284

Description

Pluto is a superset of Lua 5.4 with a focus on general-purpose programming. In affected versions an attacker with the ability to actively intercept network traffic would be able to use a specifically-crafted certificate to fool Pluto into trusting it to be the intended remote for the TLS session. This results in the HTTP library and socket.starttls providing less transport integrity than expected. This issue has been patched in pull request #851 which has been included in version 0.9.3. Users are advised to upgrade. there are no known workarounds for this vulnerability.

Affected products

PlutoLang Pluto: from 0.9.0 before 0.9.3 — fixed in 0.9.3

How to fix

Upgrade to a fixed version: PlutoLang Pluto 0.9.3. Check the vendor advisory for mitigations.

References

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