D-Link DSL-3782 EU 1.01 Diagnostics /userfs/bin/tcapi get memory corruption

Summaryinfo

A vulnerability, which was classified as critical, was found in D-Link DSL-3782 EU 1.01. Impacted is an unknown function of the file /userfs/bin/tcapi of the component Diagnostics. Executing a manipulation of the argument get as part of Parameter can lead to memory corruption. The identification of this vulnerability is CVE-2018-10746. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability has been found in D-Link DSL-3782 EU 1.01 and classified as critical. This vulnerability affects some unknown functionality of the file /userfs/bin/tcapi of the component Diagnostics. The manipulation of the argument get as part of a Parameter leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered on D-Link DSL-3782 EU 1.01 devices. An authenticated user can pass a long buffer as a 'get' parameter to the '/userfs/bin/tcapi' binary (in the Diagnostics component) using the 'get <node_name attr>' function and cause memory corruption. Furthermore, it is possible to redirect the flow of the program and execute arbitrary code.

The bug was discovered 05/04/2018. The weakness was shared 05/04/2018 (Website). The advisory is shared for download at github.com. This vulnerability was named CVE-2018-10746 since 05/04/2018. The exploitation appears to be easy. The attack can be initiated remotely. A single authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 02/02/2020).

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

The entries VDB-117368, VDB-117367, VDB-117366 and VDB-117365 are related to this item. Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

• D-Link

Name

• DSL-3782

Version

• EU 1.01

License

• commercial

Website

• Vendor: https://www.dlink.com/

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