Root shell via unbounded ProvinceCode formatting
Published Aug 25, 2022 · Updated Aug 3, 2024
Stack overflow in formSetProvince in Tenda AX1803 1.0.0.1 allows local users to crash the router via crafted ProvinceCode input. The function passes the unbounded ProvinceCode string to sprintf with a %s conversion and stores the result in a smaller stack buffer named s. Exploitation requires low-privileged access without user interaction; the published request demonstrates a crash, while the disclosure reports program-counter control enabling a root shell.
Summary
What happened
Stack overflow in formSetProvince in Tenda AX1803 1.0.0.1 allows local users to crash the router via crafted ProvinceCode input. The function passes the unbounded ProvinceCode string to sprintf with a %s conversion and stores the result in a smaller stack buffer named s. Exploitation requires low-privileged access without user interaction; the published request demonstrates a crash, while the disclosure reports program-counter control enabling a root shell.
The record
- CVE
- CVE-2022-37821
- Published
- Aug 25, 2022
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-787, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 25, 2022CVE publishedPublication date reported by the CVE source.
- Aug 3, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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What is affected?
Affected products and versions are unavailable in this record.
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
- SetProvinceCode HTTP denial-of-service proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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