Netgear R6700 1.0.4.84_10.0.58 File Upload integer overflow

Summaryinfo

A vulnerability classified as critical has been found in Netgear R6700 1.0.4.84_10.0.58. This affects an unknown part of the component File Upload Handler. The manipulation leads to integer overflow. This vulnerability is referenced as CVE-2020-10929. The attack needs to be initiated within the local network. No exploit is available.

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 some unknown processing of the component File Upload Handler. The manipulation with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-680. The product performs a calculation to determine how much memory to allocate, but an integer overflow can occur that causes less memory to be allocated than expected, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

This vulnerability allows network-adjacent attackers to execute arbitrary code 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 handling of string table file uploads. 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 the admin user. Was ZDI-CAN-9768.

The weakness was published 07/28/2020 (Website). It is possible to read the advisory at zerodayinitiative.com. The identification of this vulnerability is CVE-2020-10929 since 03/24/2020. Access to the local network is required for this attack to succeed. No form of authentication is needed for a successful exploitation. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 07/29/2020).

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

Similar entries are available at VDB-159096, VDB-159094, VDB-159093 and VDB-159092. Be aware that VulDB is the high quality source for 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/

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CPE 2.2info

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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