Authenticated memory corruption via unbounded route parsing
Published Mar 20, 2024 · Updated Aug 1, 2024
Stack-based buffer overflow in Tenda AC10U 15.03.06.49 allows remote authenticated users to corrupt memory via a crafted static-route list. Within fromSetRouteStatic, the list POST value reaches save_staticroute_data, where sscanf parses four comma-separated fields into fixed-size stack buffers without field-width limits. Low-privilege access to the management endpoint is required; the proof of concept establishes the overwrite trigger but not reliable code execution or a specific post-corruption outcome.
Summary
What happened
Stack-based buffer overflow in Tenda AC10U 15.03.06.49 allows remote authenticated users to corrupt memory via a crafted static-route list. Within fromSetRouteStatic, the list POST value reaches save_staticroute_data, where sscanf parses four comma-separated fields into fixed-size stack buffers without field-width limits. Low-privilege access to the management endpoint is required; the proof of concept establishes the overwrite trigger but not reliable code execution or a specific post-corruption outcome.
The record
- CVE
- CVE-2024-2709
- Published
- Mar 20, 2024
- Updated
- Aug 1, 2024
- Vendor
- Shenzhen Tenda Technology Co., Ltd.
- Product
- AC10U
- Classifications
- CWE-121, CWE-787, T1190
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 20, 2024CVE publishedPublication date reported by the CVE source.
- Aug 1, 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?
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- Affected versionversion=15.03.06.49
What conditions does exploitation require?
What is affected?
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
- fromSetRouteStatic stack-overflow proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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