2021-25428 | Samsung PackageManager permission

By Max On Jul 11, 2021

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5.3	$0-$5k	1.08

A vulnerability was found in Samsung PackageManager. It has been declared as critical. Affected by this vulnerability is an unknown function. The manipulation with an unknown input leads to a privilege escalation vulnerability. The CWE definition for the vulnerability is CWE-275. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Improper validation check vulnerability in PackageManager prior to SMR July-2021 Release 1 allows untrusted applications to get dangerous level permission without user confirmation in limited circumstances.

The weakness was released 07/09/2021. It is possible to read the advisory at security.samsungmobile.com. This vulnerability is known as CVE-2021-25428 since 01/19/2021. The exploitation appears to be easy. The attack needs to approached within the local network. The successful exploitation requires a single authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1222 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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