CVE-2021-31802: Buffer Overflow
First published: Mon Apr 26 2021(Updated: )
NETGEAR R7000 1.0.11.116 devices have a heap-based Buffer Overflow that is exploitable from the local network without authentication. The vulnerability exists within the handling of an HTTP request. An attacker can leverage this to execute code as root. The problem is that a user-provided length value is trusted during a backup.cgi file upload. The attacker must add a \n before the Content-Length header.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Netgear Nighthawk R7000 Firmware | <=1.0.11.116 | |
| NETGEAR Nighthawk R7000 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-31802?
CVE-2021-31802 is classified as a critical vulnerability due to its potential for remote code execution.
How do I fix CVE-2021-31802?
To mitigate CVE-2021-31802, users should update their NETGEAR R7000 firmware to a version beyond 1.0.11.116.
What type of vulnerability is CVE-2021-31802?
CVE-2021-31802 is a heap-based buffer overflow vulnerability.
Can CVE-2021-31802 be exploited remotely?
Yes, CVE-2021-31802 can be exploited from the local network without authentication.
What impact does CVE-2021-31802 have on affected devices?
CVE-2021-31802 allows attackers to execute code as root on affected NETGEAR R7000 devices.
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