// For flags

CVE-2023-21516

Samsung Galaxy S22 McsWebViewActivity Permissive List of Allowed Inputs Remote Code Execution Vulnerability

Severity Score

9.6
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

XSS vulnerability from InstantPlay in Galaxy Store prior to version 4.5.49.8 allows attackers to execute javascript API to install APK from Galaxy Store.

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.

*Credits: Sam Thomas (@_s_n_t) of Pentest Ltd (@pentestltd)
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-11-14 CVE Reserved
  • 2023-05-26 CVE Published
  • 2024-08-02 CVE Updated
  • 2024-11-05 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-20: Improper Input Validation
  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Samsung
Search vendor "Samsung"
 Galaxy Store
Search vendor "Samsung" for product "Galaxy Store"
 < 4.5.49.8
Search vendor "Samsung" for product "Galaxy Store" and version " < 4.5.49.8"
-
Affected