Netgear R6700 up to 1.0.4.84_10.0.58 Service Port 5916 stack-based overflow

Summaryinfo

A vulnerability, which was classified as critical, was found in Netgear R6700 up to 1.0.4.84_10.0.58. This vulnerability affects unknown code of the component Service Port 5916. Such manipulation leads to stack-based overflow. This vulnerability is traded as CVE-2020-15635. Access to the local network is required for this attack to succeed. There is no exploit available.

Detailsinfo

A vulnerability was found in Netgear R6700 up to 1.0.4.84_10.0.58 (Wireless LAN Software). It has been rated as critical. Affected by this issue is some unknown functionality of the component Service Port 5916. 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. CVE summarizes:

This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of NETGEAR R6700 V1.0.4.84_10.0.58 routers with firmware 1.0.4.84_10.0.58. Authentication is not required to exploit this vulnerability. The specific flaw exists within the acsd service, which listens on TCP port 5916 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 the admin user. Was ZDI-CAN-9853.

The weakness was shared 08/20/2020 (Website). The advisory is shared for download at kb.netgear.com. This vulnerability is handled as CVE-2020-15635 since 07/07/2020. The attack can only be initiated within the local network. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 08/20/2020).

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

The entry VDB-160063 is related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Wireless LAN Software

Vendor

• Netgear

Name

• R6700

Version

• 1.0.4.84_10.0.0
• 1.0.4.84_10.0.1
• 1.0.4.84_10.0.2
• 1.0.4.84_10.0.3
• 1.0.4.84_10.0.4
• 1.0.4.84_10.0.5
• 1.0.4.84_10.0.6
• 1.0.4.84_10.0.7
• 1.0.4.84_10.0.8
• 1.0.4.84_10.0.9
• 1.0.4.84_10.0.10
• 1.0.4.84_10.0.11
• 1.0.4.84_10.0.12
• 1.0.4.84_10.0.13
• 1.0.4.84_10.0.14
• 1.0.4.84_10.0.15
• 1.0.4.84_10.0.16
• 1.0.4.84_10.0.17
• 1.0.4.84_10.0.18
• 1.0.4.84_10.0.19
• 1.0.4.84_10.0.20
• 1.0.4.84_10.0.21
• 1.0.4.84_10.0.22
• 1.0.4.84_10.0.23
• 1.0.4.84_10.0.24
• 1.0.4.84_10.0.25
• 1.0.4.84_10.0.26
• 1.0.4.84_10.0.27
• 1.0.4.84_10.0.28
• 1.0.4.84_10.0.29
• 1.0.4.84_10.0.30
• 1.0.4.84_10.0.31
• 1.0.4.84_10.0.32
• 1.0.4.84_10.0.33
• 1.0.4.84_10.0.34
• 1.0.4.84_10.0.35
• 1.0.4.84_10.0.36
• 1.0.4.84_10.0.37
• 1.0.4.84_10.0.38
• 1.0.4.84_10.0.39
• 1.0.4.84_10.0.40
• 1.0.4.84_10.0.41
• 1.0.4.84_10.0.42
• 1.0.4.84_10.0.43
• 1.0.4.84_10.0.44
• 1.0.4.84_10.0.45
• 1.0.4.84_10.0.46
• 1.0.4.84_10.0.47
• 1.0.4.84_10.0.48
• 1.0.4.84_10.0.49
• 1.0.4.84_10.0.50
• 1.0.4.84_10.0.51
• 1.0.4.84_10.0.52
• 1.0.4.84_10.0.53
• 1.0.4.84_10.0.54
• 1.0.4.84_10.0.55
• 1.0.4.84_10.0.56
• 1.0.4.84_10.0.57
• 1.0.4.84_10.0.58

License

• commercial

Website

• Vendor: https://www.netgear.com/

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