Advisory Details

June 21st, 2024

(Pwn2Own) Phoenix Contact CHARX SEC-3100 CANopenDevice Null Pointer Dereference Denial-of-Service Vulnerability

ZDI-24-866
ZDI-CAN-24095

CVE ID CVE-2024-26004
CVSS SCORE 6.5, AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
AFFECTED VENDORS Phoenix Contact
AFFECTED PRODUCTS CHARX SEC-3100
VULNERABILITY DETAILS

This vulnerability allows network-adjacent attackers to create a denial-of-service condition on affected installations of Phoenix Contact CHARX SEC-3100 devices. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of CANopenDevice objects. The issue results from dereferencing a null pointer. An attacker can leverage this vulnerability to create a denial-of-service condition on the system.
ADDITIONAL DETAILS Phoenix Contact has issued an update to correct this vulnerability. More details can be found at:
https://cert.vde.com/en/advisories/VDE-2024-011/
DISCLOSURE TIMELINE
  • 2024-05-02 - Vulnerability reported to vendor
  • 2024-06-21 - Coordinated public release of advisory
  • 2024-08-15 - Advisory Updated
CREDIT RET2 Systems
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