CVE-2021-31802

Published on: 04/26/2021 12:00:00 AM UTC

Last Modified on: 05/06/2021 08:38:00 PM UTC

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Certain versions of R7000 from Netgear contain the following vulnerability:

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.

  • CVE-2021-31802 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as HIGH severity.

CVSS3 Score: 8.8 - HIGH

Attack
Vector
Attack
Complexity
Privileges
Required
User
Interaction
ADJACENT_NETWORK LOW NONE NONE
Scope Confidentiality
Impact
Integrity
Impact
Availability
Impact
UNCHANGED HIGH HIGH HIGH

CVSS2 Score: 8.3 - HIGH

Access
Vector
Access
Complexity
Authentication
ADJACENT_NETWORK LOW NONE
Confidentiality
Impact
Integrity
Impact
Availability
Impact
COMPLETE COMPLETE COMPLETE

CVE References

Description Tags Link
SSD Advisory – NETGEAR Nighthawk R7000 httpd PreAuth RCE - SSD Secure Disclosure ssd-disclosure.com
text/html
URL Logo MISC ssd-disclosure.com/ssd-advisory-netgear-nighthawk-r7000-httpd-preauth-rce/
NETGEAR Product Security | NETGEAR www.netgear.com
text/html
URL Logo MISC www.netgear.com/about/security/

Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
HardwareNetgearR7000-AllAllAll
Operating
System
NetgearR7000 FirmwareAllAllAllAll
  • cpe:2.3:h:netgear:r7000:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:netgear:r7000_firmware:*:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @CVEreport CVE-2021-31802 : NETGEAR R7000 1.0.11.116 devices have a heap-based Buffer Overflow that is exploitable from the lo… twitter.com/i/web/status/1… 2021-04-26 12:41:29
Reddit Logo Icon /r/ReverseEngineering CVE-2021-31802: NETGEAR Nighthawk R7000 httpd PreAuth RCE 2021-04-26 13:12:32
© CVE.report 2021 Twitter Nitter Twitter Viewer |

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