Netgear R6700 1.0.4.84_10.0.58 httpd Service stack-based overflow

Summaryinfo

A vulnerability has been found in Netgear R6700 1.0.4.84_10.0.58 and classified as critical. This impacts an unknown function of the component httpd Service. The manipulation leads to stack-based overflow. This vulnerability is listed as CVE-2020-15416. The attack must be carried out from within the local network. There is no available exploit.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Netgear R6700 1.0.4.84_10.0.58 (Wireless LAN Software). This issue affects an unknown part of the component httpd Service. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A 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). Impacted is confidentiality, integrity, and availability. The summary by CVE is:

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of NETGEAR R6700 V1.0.4.84_10.0.58 routers. Authentication is not required to exploit this vulnerability. The specific flaw exists within the httpd service, which listens on TCP port 80 by default. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length, stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of root. Was ZDI-CAN-9703.

The weakness was presented 07/28/2020 (Website). The advisory is shared at zerodayinitiative.com. The identification of this vulnerability is CVE-2020-15416 since 06/30/2020. The attack needs to be done within the local network. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 07/30/2020).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

See VDB-159114 for similar entry. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

• Wireless LAN Software

Vendor

• Netgear

Name

• R6700

Version

• 1.0.4.84_10.0.58

License

• commercial

Website

• Vendor: https://www.netgear.com/

CPE 2.3info

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CPE 2.2info

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Entryinfo

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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