2021-25426 | Samsung Message SmsViewerActivity access control

By Max On Jul 11, 2021

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5.3	$0-$5k	0.69

A vulnerability was found in Samsung Message. It has been classified as critical. This affects an unknown functionality of the component SmsViewerActivity. The manipulation with an unknown input leads to a privilege escalation vulnerability. CWE is classifying the issue as CWE-264. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Improper component protection vulnerability in SmsViewerActivity of Samsung Message prior to SMR July-2021 Release 1 allows untrusted applications to access Message files.

The weakness was shared 07/09/2021. It is possible to read the advisory at security.samsungmobile.com. This vulnerability is uniquely identified as CVE-2021-25426 since 01/19/2021. The exploitability is told to be easy. The attack can only be done within the local network. The successful exploitation needs a authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

Upgrading to version SMR July-2021 Release 1 eliminates this vulnerability. The upgrade is hosted for download at security.samsungmobile.com.

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