CVE-2024-33780Public exploitNetwork attack vector

Party crash via unchecked SilentPprf copy

Published May 7, 2024 · Updated Aug 2, 2024

Buffer overflow in osuCrypto::copyOut in CSIRO Data61 MP-SPDZ 0.3.8 allows remote attackers to crash a party via a crafted message. The SilentPprf.cpp routine writes a block through an output matrix view without checking that the destination can contain the copied data, causing an invalid memory write. The affected party must process the crafted protocol message; the published reproduction shows spdz2k-party.x aborting, limiting the documented consequence to service interruption.

CVSS severity6.5
Medium
EPSS probability0.57%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Buffer overflow in osuCrypto::copyOut in CSIRO Data61 MP-SPDZ 0.3.8 allows remote attackers to crash a party via a crafted message. The SilentPprf.cpp routine writes a block through an output matrix view without checking that the destination can contain the copied data, causing an invalid memory write. The affected party must process the crafted protocol message; the published reproduction shows spdz2k-party.x aborting, limiting the documented consequence to service interruption.

The record

CVE
CVE-2024-33780
Published
May 7, 2024
Updated
Aug 2, 2024
Vendor
CSIRO Data61
Product
MP-SPDZ
Classifications
CWE-120, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 7, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0.3.8

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

CSIRO Data61 · MP-SPDZversion=0.3.8

Published CVSS scores

6.5CISACVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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