// For flags

CVE-2024-39352

Synology BC500 Protection Mechanism Failure Software Downgrade Vulnerability

Severity Score

4.9
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

A vulnerability regarding incorrect authorization is found in the firmware upgrade functionality. This allows remote authenticated users with administrator privileges to bypass firmware integrity check via unspecified vectors. The following models with Synology Camera Firmware versions before 1.0.7-0298 may be affected: BC500 and TC500.

This vulnerability allows network-adjacent attackers to downgrade Synology software on affected installations of Synology BC500 cameras. Authentication is required to exploit this vulnerability.
The specific flaw exists within the update functionality. The issue results from the lack of proper validation of version information before performing an update. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of root.

*Credits: Romain JOUET (@JouetR), Baptiste MOINE (@Creased_) from Synacktiv (@Synacktiv) working with Trend Micro Zero Day Initiative
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Adjacent
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-06-21 CVE Published
  • 2024-06-24 CVE Reserved
  • 2024-07-26 EPSS Updated
  • 2024-08-02 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-863: Incorrect Authorization
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Synology
Search vendor "Synology"
 Camera Firmware
Search vendor "Synology" for product "Camera Firmware"
 >= 1.0.0 < 1.0.7-0298
Search vendor "Synology" for product "Camera Firmware" and version " >= 1.0.0 < 1.0.7-0298"
en
Affected