CVE-2017-7924

Allen-Bradley's Legacy Protocol (PCCC) Denial Of Service

Severity Score

7.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

An Improper Input Validation issue was discovered in Rockwell Automation MicroLogix 1100 controllers 1763-L16BWA, 1763-L16AWA, 1763-L16BBB, and 1763-L16DWD. A remote, unauthenticated attacker could send a single, specially crafted Programmable Controller Communication Commands (PCCC) packet to the controller that could potentially cause the controller to enter a DoS condition.

Se ha descubierto un problema de validación de entrada incorrecta en los controladores Rockwell Automation MicroLogix 1100 1763-L16BWA, 1763-L16AWA, 1763-L16BBB y 1763-L16DWD. Un atacante remoto sin autenticar podría enviar un único paquete de tipo Programmable Controller Communication Commands (PCCC) manipulado al controlador que podría provocar que el controlador entre en una denegación de servicio.

A remote, unauthenticated attacker could send a single, specially crafted Programmable Controller Communication Commands (PCCC) packet to the controller that could potentially cause the controller to enter a DoS condition. MicroLogix 1100 controllers are affected: 1763-L16BWA, 1763-L16AWA, 1763-L16BBB, and 1763-L16DWD.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2017-04-18 CVE Reserved
2017-09-20 CVE Published
2023-07-31 EPSS Updated
2024-08-05 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-20: Improper Input Validation

CAPEC

References (2)

URL	Tag	Source
http://www.securityfocus.com/bid/99622	Third Party Advisory
https://ics-cert.us-cert.gov/advisories/ICSA-17-138-03	Mitigation

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Rockwellautomation Search vendor "Rockwellautomation"	1763-l16bwa Firmware Search vendor "Rockwellautomation" for product "1763-l16bwa Firmware"	-	-	Affected	in	Rockwellautomation Search vendor "Rockwellautomation"	1763-l16bwa Search vendor "Rockwellautomation" for product "1763-l16bwa"	-	-	Safe
Rockwellautomation Search vendor "Rockwellautomation"	1763-l16awa Firmware Search vendor "Rockwellautomation" for product "1763-l16awa Firmware"	-	-	Affected	in	Rockwellautomation Search vendor "Rockwellautomation"	1763-l16awa Search vendor "Rockwellautomation" for product "1763-l16awa"	-	-	Safe
Rockwellautomation Search vendor "Rockwellautomation"	1763-l16bbb Firmware Search vendor "Rockwellautomation" for product "1763-l16bbb Firmware"	-	-	Affected	in	Rockwellautomation Search vendor "Rockwellautomation"	1763-l16bbb Search vendor "Rockwellautomation" for product "1763-l16bbb"	-	-	Safe
Rockwellautomation Search vendor "Rockwellautomation"	1763-l16dwd Firmware Search vendor "Rockwellautomation" for product "1763-l16dwd Firmware"	-	-	Affected	in	Rockwellautomation Search vendor "Rockwellautomation"	1763-l16dwd Search vendor "Rockwellautomation" for product "1763-l16dwd"	-	-	Safe