CVE-2022-27641: netgear d7800_firmware Integer Overflow or Wraparound

Vulnerability summary

CVE-2022-27641 is a high (CVSS 8.8) Integer Overflow or Wraparound vulnerability in netgear d7800_firmware. EPSS estimates a 1.23% chance of exploitation in the next 30 days, higher than 68.5% of scored vulnerabilities.

Timeline

1. 29-03-2023
   PublishedVulnerability first disclosed.
2. 18-02-2025
   Last modifiedVulnerability information updated.

Description

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700v3 1.0.4.120_10.0.91 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the NetUSB module. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-15806.

• CWE-190Integer Overflow or WraparoundThe product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.