Unauthenticated service crash via unchecked item count
Published Jan 28, 2021 · Updated Aug 4, 2024
Stack-based buffer overflow in Accfly Wireless Security IR Camera System 720P 3.10.73 through 4.15.77 allows remote attackers to crash Alloca. CNetClientGuard::SubOprMsg trusts the packet itemCnt field and uses memcpy to copy 24-byte items into a 144-byte stack buffer without enforcing the six-item limit. Network access is sufficient because the proprietary binary protocol performs no authentication; the published proof of concept overwrites the return address, plays a built-in sound, and crashes the process.
Summary
What happened
Stack-based buffer overflow in Accfly Wireless Security IR Camera System 720P 3.10.73 through 4.15.77 allows remote attackers to crash Alloca. CNetClientGuard::SubOprMsg trusts the packet itemCnt field and uses memcpy to copy 24-byte items into a 144-byte stack buffer without enforcing the six-item limit. Network access is sufficient because the proprietary binary protocol performs no authentication; the published proof of concept overwrites the return address, plays a built-in sound, and crashes the process.
The record
- CVE
- CVE-2020-25784
- Published
- Jan 28, 2021
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-787, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jan 28, 2021CVE publishedPublication date reported by the CVE source.
- Aug 4, 2024Record 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?
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.
Public exploit references
- runGuard.py proof of conceptproof of concept · demonstrated
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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