Party-process crash via unterminated stack buffer
Published May 7, 2024 · Updated Mar 27, 2025
Stack-based buffer overflow in MP-SPDZ 0.3.8 allows remote attackers to crash an MPC party process via a crafted message. OTExtensionWithMatrix::extend compares a six-byte stack buffer as a null-terminated C string, causing strlen to read beyond the buffer when no terminator is present. No authentication or user interaction is required; successful exploitation terminates the affected party and interrupts the multiparty computation.
Summary
What happened
Stack-based buffer overflow in MP-SPDZ 0.3.8 allows remote attackers to crash an MPC party process via a crafted message. OTExtensionWithMatrix::extend compares a six-byte stack buffer as a null-terminated C string, causing strlen to read beyond the buffer when no terminator is present. No authentication or user interaction is required; successful exploitation terminates the affected party and interrupts the multiparty computation.
The record
- CVE
- CVE-2024-33782
- Published
- May 7, 2024
- Updated
- Mar 27, 2025
- Vendor
- CSIRO Data61
- Product
- MP-SPDZ
- Classifications
- CWE-121, T1499
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- May 7, 2024CVE publishedPublication date reported by the CVE source.
- Mar 27, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What conditions does exploitation require?
What is affected?
Published CVSS scores
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Attacks
What attackers are doing with it
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Public exploit references
- MP-SPDZ OTExtensionWithMatrix stack-buffer-overflow reproductionproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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