A vulnerability was found in ASUS RT-AC88U Download Master up to 3.1.0.105. It has been classified as problematic. Affected is some unknown functionality of the file /Main_Login.asp?flag=1&productname=RT-AC88U&url=/downloadmaster/task.asp of the component Title Handler. The manipulation of the argument productname with an unknown input leads to a injection vulnerability. CWE is classifying the issue as CWE-74. The software constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. This is going to have an impact on integrity.

The weakness was presented 12/08/2020 by Marc Ruef with scip AG as VDB-165678 as confirmed entry (VulDB). The advisory is available at vuldb.com. The public release was coordinated in cooperation with the vendor. This vulnerability is traded as CVE-2020-29655. Successful exploitation requires user interaction by the victim. Technical details and a public exploit are known. This vulnerability is assigned to T1055 by the MITRE ATT&CK project.

A public exploit has been developed by Marc Ruef and been published immediately after the advisory. It is declared as proof-of-concept. The exploit is shared for download at vuldb.com. The vulnerability was handled as a non-public zero-day exploit for at least 91 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:Main_Login.asp?flag=1&productname=RT-AC88U&url=/downloadmaster/task.asp it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 3.1.0.108 eliminates this vulnerability.

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• ASUS

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• RT-AC88U Download Master

License

• commercial

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