Memory corruption via unbounded filePath formatting
Published Mar 18, 2024 · Updated Aug 2, 2024
Stack-based buffer overflow in Tenda AC18 firmware 15.03.05.05 allows remote authenticated users to corrupt stack memory via filePath. The formExpandDlnaFile handler passes the POST parameter directly to sprintf, which writes it into a stack buffer and can overwrite the return address. Access to the router's web management interface with low privileges is required; the published assessment limits impact to data modification.
Summary
What happened
Stack-based buffer overflow in Tenda AC18 firmware 15.03.05.05 allows remote authenticated users to corrupt stack memory via filePath. The formExpandDlnaFile handler passes the POST parameter directly to sprintf, which writes it into a stack buffer and can overwrite the return address. Access to the router's web management interface with low privileges is required; the published assessment limits impact to data modification.
The record
- CVE
- CVE-2024-28550
- Published
- Mar 18, 2024
- Updated
- Aug 2, 2024
- Vendor
- Shenzhen Tenda Technology Co., Ltd.
- Product
- AC18 Firmware
- Classifications
- CWE-121, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 18, 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?
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
- formExpandDlnaFile filePath 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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