Memory corruption via crafted Markdown file
Published Sep 21, 2022 · Updated Apr 9, 2025
Stack-based buffer overflow in md2roff 1.9 allows attackers to corrupt process memory by supplying a crafted Markdown file. Public records do not identify the affected function, destination buffer, or unchecked operation that writes beyond the stack allocation. The file must be processed by md2roff; the vendor disputes the security relevance because the utility is not intended to accept untrusted input, and public evidence establishes memory corruption but not code execution.
Summary
What happened
Stack-based buffer overflow in md2roff 1.9 allows attackers to corrupt process memory by supplying a crafted Markdown file. Public records do not identify the affected function, destination buffer, or unchecked operation that writes beyond the stack allocation. The file must be processed by md2roff; the vendor disputes the security relevance because the utility is not intended to accept untrusted input, and public evidence establishes memory corruption but not code execution.
The record
- CVE
- CVE-2022-41220
- Published
- Sep 21, 2022
- Updated
- Apr 9, 2025
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-787
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Sep 21, 2022CVE publishedPublication date reported by the CVE source.
- Apr 9, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
What conditions does exploitation require?
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
- md2roff issue 5 proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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