Unauthenticated stack overflow
Published Mar 23, 2021 · Updated Aug 3, 2024
A stack-based buffer overflow in NETGEAR WiFi systems before the listed firmware versions allows unauthenticated attackers to affect device availability, integrity, and confidentiality via network requests. The vulnerable pre-authentication request handler copies attacker-controlled data into a fixed-size stack buffer without sufficient bounds enforcement, causing memory corruption. Exploitation requires access to the device network service; successful attacks can crash the device or potentially execute code, while the vendor advisory does not publish a more specific payload or endpoint.
Summary
What happened
A stack-based buffer overflow in NETGEAR WiFi systems before the listed firmware versions allows unauthenticated attackers to affect device availability, integrity, and confidentiality via network requests. The vulnerable pre-authentication request handler copies attacker-controlled data into a fixed-size stack buffer without sufficient bounds enforcement, causing memory corruption. Exploitation requires access to the device network service; successful attacks can crash the device or potentially execute code, while the vendor advisory does not publish a more specific payload or endpoint.
The record
- CVE
- CVE-2021-29081
- Published
- Mar 23, 2021
- Updated
- Aug 3, 2024
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- T1210
- Attack vector
- adjacent
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 23, 2021CVE 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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Is a vulnerable build present?
What conditions does exploitation require?
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
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Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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