Code execution via unchecked DPB data copy
Published Dec 9, 2021 · Updated Sep 16, 2024
Stack-based buffer overflow in Delta Electronics CNCSoft 1.01.30 and earlier allows attackers to execute code via a crafted DPB file. The ScreenEditor module copies attacker-controlled DPB data into a fixed-length stack buffer without first validating its length. Exploitation requires a user to visit a malicious page or open the file and runs code in the current process context.
Summary
What happened
Stack-based buffer overflow in Delta Electronics CNCSoft 1.01.30 and earlier allows attackers to execute code via a crafted DPB file. The ScreenEditor module copies attacker-controlled DPB data into a fixed-length stack buffer without first validating its length. Exploitation requires a user to visit a malicious page or open the file and runs code in the current process context.
The record
- CVE
- CVE-2021-43982
- Published
- Dec 9, 2021
- Updated
- Sep 16, 2024
- Vendor
- Delta Electronics, Inc.
- Product
- CNCSoft
- Classifications
- CWE-121, T1204.002, T1203
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 9, 2021CVE publishedPublication date reported by the CVE source.
- Sep 16, 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.
- Affected versionversion=All <=1.01.30
What conditions does exploitation require?
What is affected?
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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