CVE-2021-27257: (Pwn2Own) NETGEAR R7800 ready-genie-cloud Improper Certificate Validation Remote Code Execution Vulnerability
This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information on affected installations of NETGEAR R7800 firmware version 1.0.2.76. Authentication is not required to exploit this vulnerability. The specific flaw exists within the downloading of files via FTP. The issue results from the lack of proper validation of the certificate presented by the server. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root. Was ZDI-CAN-12362.
Other sources
This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information on affected installations of NETGEAR R7800. Authentication is not required to exploit this vulnerability. The specific flaw exists within the downloading of files via FTP. The issue results from the lack of proper validation of the certificate presented by the server. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is CVE-2021-27257 vulnerability about?
This vulnerability allows network-adjacent attackers to compromise the integrity of downloaded information on affected installations of NETGEAR R7800 firmware version 1.0.2.76.
Is authentication required to exploit CVE-2021-27257?
Authentication is not required to exploit this vulnerability.
What is the severity level of CVE-2021-27257?
The severity level of CVE-2021-27257 is medium with a CVSS score of 6.5.