Lenovo Service Framework on Android Response input validation

Summaryinfo

A vulnerability has been found in Lenovo Service Framework on Android and classified as critical. Affected by this vulnerability is an unknown functionality of the component Response Handler. Performing a manipulation results in input validation. This vulnerability was named CVE-2017-3759. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in Lenovo Service Framework on Android (Android App Software) (the affected version unknown). It has been classified as critical. This affects an unknown part of the component Response Handler. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The Lenovo Service Framework Android application accepts some responses from the server without proper validation. This exposes the application to man-in-the-middle attacks leading to possible remote code execution.

The bug was discovered 10/05/2017. The weakness was presented 10/17/2017 (Website). It is possible to read the advisory at support.lenovo.com. This vulnerability is uniquely identified as CVE-2017-3759 since 12/16/2016. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available. threatpost.com writes: "Security experts are urging Lenovo customers to update their Android tablets and handsets to protect themselves against a handful of critical vulnerabilities impacting tens of millions of vulnerable Lenovo devices."

The vulnerability was handled as a non-public zero-day exploit for at least 12 days. During that time the estimated underground price was around $0-$5k.

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

Further details are available at threatpost.com. See VDB-107942, VDB-107944 and VDB-107945 for similar entries. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Android App Software

Vendor

• Lenovo

Name

• Service Framework

License

• commercial

Website

• Vendor: https://www.lenovo.com/

CPE 2.3info

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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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