CVE-2021-27252

April 27, 2021

This vulnerability allows network-adjacent attackers to execute arbitrary code 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 handling of the vendor_specific DHCP opcode. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-12216.

Summary:

This vulnerability allows network-adjacent attackers to execute arbitrary code 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 handling of the vendor_specific DHCP opcode. The issue results from the lack of proper validation of a user-supplied string before using it to execute a system call. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-12216.

Reference Links(if available):

  • https://kb.netgear.com/000062883/Security-Advisory-for-Multiple-Vulnerabilities-on-Some-Routers-Satellites-and-Extenders
  • https://www.zerodayinitiative.com/advisories/ZDI-21-248/

  • CVSS Score (if available)

    v2: / HIGH

    v3: /

    Links to Exploits(if available)

  • You may have missed

    image

    [QILIN] – Ransomware Victim: Zimmerman & Frachtman PA Law Firm

    November 22, 2024
    image

    [QILIN] – Ransomware Victim: Calvert Home Mortgage Investment

    November 22, 2024
    image

    [QILIN] – Ransomware Victim: LBCO Contracting LTD

    November 22, 2024
    unlock membership

    Unveiling Blockchain Security: Safeguarding the Digital Ledger

    November 22, 2024
    news

    A Fifth of UK Enterprises Uncertain About NIS2 Compliance Requirements

    November 22, 2024