Remote denial of service via onlineList overflow
Published Feb 15, 2022 · Updated Aug 4, 2024
Out-of-bounds write in Tenda AC11 firmware 02.03.01.104_CN allows remote attackers to cause denial of service via crafted onlineList data. The onlineList module copies attacker-controlled overflow data into a stack buffer without sufficient bounds, corrupting stack memory and interrupting router service. Exploitation requires network reachability to the router interface and no authentication; the documented consequence is denial of service rather than a demonstrated confidentiality or integrity compromise.
Summary
What happened
Out-of-bounds write in Tenda AC11 firmware 02.03.01.104_CN allows remote attackers to cause denial of service via crafted onlineList data. The onlineList module copies attacker-controlled overflow data into a stack buffer without sufficient bounds, corrupting stack memory and interrupting router service. Exploitation requires network reachability to the router interface and no authentication; the documented consequence is denial of service rather than a demonstrated confidentiality or integrity compromise.
The record
- CVE
- CVE-2021-46264
- Published
- Feb 15, 2022
- Updated
- Aug 4, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- CWE-787, T1190
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Feb 15, 2022CVE publishedPublication date reported by the CVE source.
- Aug 4, 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?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
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
- CVE-Request Tenda/9 proof-of-concept repositoryproof of concept · unverified
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Technologies
Your stack
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Your stack
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