makeswf crash via unbounded preprocessing strings
Published May 9, 2023 · Updated Jan 29, 2025
Stack buffer overflow in libming 0.4.8 allows context-dependent attackers to crash makeswf through oversized -D and -o option values. makeswf_preprocess passes attacker-influenced preprocessor and output-name strings to sprintf, which writes them into a 1,024-byte stack buffer without a length bound. Reachability requires an application or operator to invoke makeswf with attacker-influenced option values; the public reproduction demonstrates an AddressSanitizer abort, while code execution has not been demonstrated.
Summary
What happened
Stack buffer overflow in libming 0.4.8 allows context-dependent attackers to crash makeswf through oversized -D and -o option values. makeswf_preprocess passes attacker-influenced preprocessor and output-name strings to sprintf, which writes them into a 1,024-byte stack buffer without a length bound. Reachability requires an application or operator to invoke makeswf with attacker-influenced option values; the public reproduction demonstrates an AddressSanitizer abort, while code execution has not been demonstrated.
The record
- CVE
- CVE-2023-31976
- Published
- May 9, 2023
- Updated
- Jan 29, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-787
- Attack vector
- local
- Privileges
- Unavailable
Timeline
How it unfolded
- May 9, 2023CVE publishedPublication date reported by the CVE source.
- Jan 29, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
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.
Weakness, pattern, technique
Public exploit references
- Upstream makeswf oversized-option reproductionproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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