Code execution or router crash via unbounded copy
Published Mar 21, 2024 · Updated Aug 2, 2024
Stack-based buffer overflow in Tenda AC10U 15.03.06.48 allows remote authenticated users to execute code via a crafted PPTP request. The formSetPPTPServer handler parses attacker-controlled startIP fields with unbounded sscanf conversions and uses sprintf to copy the results into a stack buffer, allowing the saved return address to be overwritten. Access to the router's authenticated management interface is required; exploitation can crash the router or redirect execution.
Summary
What happened
Stack-based buffer overflow in Tenda AC10U 15.03.06.48 allows remote authenticated users to execute code via a crafted PPTP request. The formSetPPTPServer handler parses attacker-controlled startIP fields with unbounded sscanf conversions and uses sprintf to copy the results into a stack buffer, allowing the saved return address to be overwritten. Access to the router's authenticated management interface is required; exploitation can crash the router or redirect execution.
The record
- CVE
- CVE-2024-2764
- Published
- Mar 21, 2024
- Updated
- Aug 2, 2024
- Vendor
- Shenzhen Tenda Technology Co., Ltd.
- Product
- AC10U
- Classifications
- CWE-121, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 21, 2024CVE publishedPublication date reported by the CVE source.
- Aug 2, 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?
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- Affected versionversion=15.03.06.48
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
- formSetPPTPServer HTTP proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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