CVE-2020-15636: netgear multiple routers Stack-based Buffer Overflow

Vulnerability summary

CVE-2020-15636 is a high (CVSS 10.0) Stack-based Buffer Overflow vulnerability in netgear multiple routers. EPSS estimates a 8.54% chance of exploitation in the next 30 days, higher than 95% of scored vulnerabilities.

Timeline

1. 19-08-2020
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

This vulnerability allows remote attackers to execute arbitrary code on affected installations of NETGEAR R6400, R6700, R7000, R7850, R7900, R8000, RS400, and XR300 routers with firmware 1.0.4.84_10.0.58. Authentication is not required to exploit this vulnerability. The specific flaw exists within the check_ra service. A crafted raePolicyVersion in a RAE_Policy.json file can trigger an overflow of a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-9852.

• CWE-121Stack-based Buffer OverflowA stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).