CVE-2021-31802

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.

CVSS v3 8.8 HIGH
CVSS v2.0 8.3 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

8.3^/10

CVSS v2.0 : HIGH

Vector : AV:A/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 6.5 / Impact : 10.0

Access Vector ADJACENT_NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://ssd-disclosure.com/ssd-advisory-netgear-nighthawk-r7000-httpd-preauth-rce/	Exploit Third Party Advisory
https://www.netgear.com/about/security/	Vendor Advisory
https://ssd-disclosure.com/ssd-advisory-netgear-nighthawk-r7000-httpd-preauth-rce/	Exploit Third Party Advisory
https://www.netgear.com/about/security/	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:netgear:r7000_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:netgear:r7000:-:*:*:*:*:*:*:*

History

21 Nov 2024, 06:06

Type	Values Removed	Values Added
References	~~() https://ssd-disclosure.com/ssd-advisory-netgear-nighthawk-r7000-httpd-preauth-rce/ - Exploit, Third Party Advisory~~	() https://ssd-disclosure.com/ssd-advisory-netgear-nighthawk-r7000-httpd-preauth-rce/ - Exploit, Third Party Advisory
References	~~() https://www.netgear.com/about/security/ - Vendor Advisory~~	() https://www.netgear.com/about/security/ - Vendor Advisory

Information

Published : 2021-04-26 13:15

Updated : 2024-11-21 06:06

NVD link : CVE-2021-31802

Mitre link : CVE-2021-31802

CVE.ORG link : CVE-2021-31802

JSON object : View

Products Affected

netgear

r7000
r7000_firmware

CWE

CWE-787

Out-of-bounds Write

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