Authenticated code execution via unbounded time parsing
Published Aug 27, 2024 · Updated Aug 28, 2024
Stack-based buffer overflow in Tenda G3 15.11.0.20 allows remote authenticated users to execute code via a crafted time-setting request. In formSetSysTime, sscanf parses attacker-controlled manualTime with unbounded conversion fields into six fixed-size stack arrays for year, month, day, hour, minute, and second. Access to the web management endpoint is required, and a successful overflow can execute arbitrary code or crash the router.
Summary
What happened
Stack-based buffer overflow in Tenda G3 15.11.0.20 allows remote authenticated users to execute code via a crafted time-setting request. In formSetSysTime, sscanf parses attacker-controlled manualTime with unbounded conversion fields into six fixed-size stack arrays for year, month, day, hour, minute, and second. Access to the web management endpoint is required, and a successful overflow can execute arbitrary code or crash the router.
The record
- CVE
- CVE-2024-8225
- Published
- Aug 27, 2024
- Updated
- Aug 28, 2024
- Vendor
- Shenzhen Tenda Technology Co., Ltd.
- Product
- G3 QoS VPN Router
- Classifications
- CWE-121, T1210
- 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.
Public exploit references
- Tenda G3 formSetSysTime proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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