(Pwn2Own) Samsung Galaxy S22 McsWebViewActivity Permissive List of Allowed Inputs Remote Code Execution Vulnerability
May 31st, 2023
Vulnerability Details
This vulnerability allows remote attackers to execute arbitrary code on affected installations of Samsung Galaxy S22 smartphones. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.
The specific flaw exists within the McsWebViewActivity class. The issue results from a permissive list of allowed inputs. An attacker can leverage this vulnerability to execute code in the context of the current user.
Additional Details
Samsung has issued an update to correct this vulnerability. More details can be found at:
https://security.samsungmobile.com/serviceWeb.smsb
Disclosure Timeline
- 2023-01-24 - Vulnerability reported to vendor
- 2023-05-31 - Coordinated public release of advisory
Credit
Interrupt Labs
