Authenticated memory corruption via oversized PPW decoding
Published Apr 17, 2024 · Updated Nov 6, 2024
Stack-based buffer overflow in Tenda A18 firmware 15.03.05.05 allows remote authenticated users to corrupt memory via a crafted POST request. The fromWizardHandle function passes the attacker-controlled PPW value to decodePwd without limiting it to the capacity of the stack-based decode_pwd array. Management-interface access is required, and the published proof triggers the overflow with an oversized PPW field sent to /goform/WizardHandle.
Summary
What happened
Stack-based buffer overflow in Tenda A18 firmware 15.03.05.05 allows remote authenticated users to corrupt memory via a crafted POST request. The fromWizardHandle function passes the attacker-controlled PPW value to decodePwd without limiting it to the capacity of the stack-based decode_pwd array. Management-interface access is required, and the published proof triggers the overflow with an oversized PPW field sent to /goform/WizardHandle.
The record
- CVE
- CVE-2024-32305
- Published
- Apr 17, 2024
- Updated
- Nov 6, 2024
- Vendor
- Shenzhen Tenda Technology Co., Ltd.
- Product
- A18
- Classifications
- CWE-121
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 17, 2024CVE publishedPublication date reported by the CVE source.
- Nov 6, 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=15.03.05.05
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
- fromWizardHandle oversized PPW proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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