Memory corruption via unbounded debug command formatting
Published Aug 27, 2024 · Updated Aug 28, 2024
Stack-based buffer overflow in Tenda G3 firmware 15.11.0.20 allows remote authenticated users to corrupt memory via a crafted POST request. The formSetDebugCfg handler uses unbounded sprintf to format attacker-controlled enable, level, and module values into the stack cmd buffer. Low-privilege access to the web management endpoint is required; oversized input corrupts process memory and can crash the affected service.
Summary
What happened
Stack-based buffer overflow in Tenda G3 firmware 15.11.0.20 allows remote authenticated users to corrupt memory via a crafted POST request. The formSetDebugCfg handler uses unbounded sprintf to format attacker-controlled enable, level, and module values into the stack cmd buffer. Low-privilege access to the web management endpoint is required; oversized input corrupts process memory and can crash the affected service.
The record
- CVE
- CVE-2024-8224
- Published
- Aug 27, 2024
- Updated
- Aug 28, 2024
- Vendor
- Shenzhen Tenda Technology Co., Ltd.
- Product
- G3 QoS VPN Router
- Classifications
- CWE-121, CWE-787, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 27, 2024CVE publishedPublication date reported by the CVE source.
- Aug 28, 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=15.11.0.20
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
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
- formSetDebugCfg oversized module POST proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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