Code execution or service interruption via unchecked copy
Published Jun 13, 2024 · Updated Aug 2, 2024
Stack-based buffer overflow in TOTOLINK A3700R Firmware 9.1.2u.6165_20211012 allows attackers to execute code or interrupt service. UploadCustomModule copies the attacker-controlled File value from v7 into the fixed-size v14 stack buffer without checking its length. The request reaches the router's management CGI from an adjacent network, and the published proof of concept supplies a session cookie.
Summary
What happened
Stack-based buffer overflow in TOTOLINK A3700R Firmware 9.1.2u.6165_20211012 allows attackers to execute code or interrupt service. UploadCustomModule copies the attacker-controlled File value from v7 into the fixed-size v14 stack buffer without checking its length. The request reaches the router's management CGI from an adjacent network, and the published proof of concept supplies a session cookie.
The record
- CVE
- CVE-2024-37631
- Published
- Jun 13, 2024
- Updated
- Aug 2, 2024
- Vendor
- TOTOLINK
- Product
- TOTOLINK A3700R Firmware
- Classifications
- CWE-121, T1499
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 13, 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=9.1.2u.6165_20211012
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
- UploadCustomModule oversized File HTTP proof of conceptproof of concept · unverified
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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