// For flags

CVE-2024-3913

Phoenix Contact: Start sequence allows attack during the boot process

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

An unauthenticated remote attacker can use this vulnerability to change the device configuration due to a file writeable for short time after system startup.

This vulnerability allows network-adjacent attackers to bypass authentication on affected installations of Phoenix Contact CHARX SEC-3100 devices. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the firewall. The issue results from incorrect ordering and synchronization of services during startup. An attacker can leverage this in conjunction with other vulnerabilities to execute code in the context of root.

*Credits: Alex Olson, "gadha", Trend Micro's Zero Day Initiative
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Adjacent
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-04-17 CVE Reserved
  • 2024-08-13 CVE Published
  • 2024-08-20 CVE Updated
  • 2024-09-14 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-552: Files or Directories Accessible to External Parties
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Phoenix Contact
Search vendor "Phoenix Contact"
 CHARX SEC-3000 (1139022)
Search vendor "Phoenix Contact" for product "CHARX SEC-3000 (1139022)"
 >= 0.0.0 < 1.7.0
Search vendor "Phoenix Contact" for product "CHARX SEC-3000 (1139022)" and version " >= 0.0.0 < 1.7.0"
en
Affected
Phoenix Contact
Search vendor "Phoenix Contact"
 CHARX SEC-3050 (1139018)
Search vendor "Phoenix Contact" for product "CHARX SEC-3050 (1139018)"
 >= 0.0.0 < 1.7.0
Search vendor "Phoenix Contact" for product "CHARX SEC-3050 (1139018)" and version " >= 0.0.0 < 1.7.0"
en
Affected
Phoenix Contact
Search vendor "Phoenix Contact"
 CHARX SEC-3100 (1139012)
Search vendor "Phoenix Contact" for product "CHARX SEC-3100 (1139012)"
 >= 0.0.0 < 1.7.0
Search vendor "Phoenix Contact" for product "CHARX SEC-3100 (1139012)" and version " >= 0.0.0 < 1.7.0"
en
Affected
Phoenix Contact
Search vendor "Phoenix Contact"
 CHARX SEC-3150 (1139012)
Search vendor "Phoenix Contact" for product "CHARX SEC-3150 (1139012)"
 >= 0.0.0 < 1.7.0
Search vendor "Phoenix Contact" for product "CHARX SEC-3150 (1139012)" and version " >= 0.0.0 < 1.7.0"
en
Affected