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

Summaryinfo

A vulnerability has been found in D-Link DSL-3782 EU 1.01 and classified as critical. The affected element is an unknown function of the file /userfs/bin/tcapi of the component Diagnostics. The manipulation of the argument unset as part of Parameter leads to memory corruption. This vulnerability is referenced as CVE-2018-10747. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in D-Link DSL-3782 EU 1.01 and classified as critical. This issue affects an unknown part of the file /userfs/bin/tcapi of the component Diagnostics. The manipulation of the argument unset as part of a Parameter leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered on D-Link DSL-3782 EU 1.01 devices. An authenticated user can pass a long buffer as an 'unset' parameter to the '/userfs/bin/tcapi' binary (in the Diagnostics component) using the 'unset <node_name>' 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 published 05/04/2018 (Website). The advisory is shared at github.com. The identification of this vulnerability is CVE-2018-10747 since 05/04/2018. The exploitation is known to be easy. The attack may be initiated remotely. A simple authentication is necessary for exploitation. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (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.

Similar entries are available at VDB-117368, VDB-117367, VDB-117366 and VDB-117364. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

• D-Link

Name

• DSL-3782

Version

• EU 1.01

License

• commercial

Website

• Vendor: https://www.dlink.com/

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Entryinfo

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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