CVE-2012-6438— Rockwell Automation ControlLogix PLC Improper Input Validation
Quick assessment
Affected
Rockwell Automation 1756-ENBT, 1756-EWEB, 1768-ENBT, 1768-EWEB communication modules
Exploitation
High exploitation probability; assess promptly
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Rockwell Automation ControlLogix提供工业自动化控制和信息产品。 Rockwell Automation ControlLogix在处理畸形CIP报文时存在安全漏洞，当向端口2222/TCP，Port 2222/UDP，Port 44818/TCP，Port 44818/UDP发送特制的CIP报文时，此漏洞可造成缓冲区溢出，造成NIC拒绝服务。
Possible ATT&CK Techniques 2 AI
T1210 · Exploitation of Remote Services T1499 · Endpoint Denial of ServiceAffected Version Matrix 9
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| Rockwell Automation | 1756-ENBT, 1756-EWEB, 1768-ENBT, 1768-EWEB communication modules | All |
affected |
| Rockwell Automation | 1788-ENBT FLEXLogix adapter | All |
affected |
| Rockwell Automation | 1794-AENTR FLEX I/O EtherNet/IP adapter | All |
affected |
| Rockwell Automation | CompactLogix and SoftLogix controllers | ≤ 19 |
affected |
| Rockwell Automation | CompactLogix L32E and L35E controllers | All |
affected |
| Rockwell Automation | ControlLogix and GuardLogix controllers | ≤ 20 |
affected |
| Rockwell Automation | ControlLogix, CompactLogix, GuardLogix, and SoftLogix | ≤ 18 |
affected |
| Rockwell Automation | MicroLogix | 1100 |
affected |
1400 |
affected |
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I. Basic Information for CVE-2012-6438
Vulnerability Information
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Vulnerability Title
Rockwell Automation ControlLogix PLC Improper Input Validation
Source: CVE Program / CVE List V5
Vulnerability Description
The device does not properly validate the data being sent to the buffer. An attacker can send a malformed CIP packet to Port 2222/TCP, Port 2222/UDP, Port 44818/TCP, or Port 44818/UDP, which creates a buffer overflow and causes the NIC to crash. Successful exploitation of this vulnerability could cause loss of availability and a disruption in communications with other connected devices.
Rockwell Automation EtherNet/IP products; 1756-ENBT, 1756-EWEB, 1768-ENBT, and 1768-EWEB communication modules; CompactLogix L32E and L35E controllers; 1788-ENBT FLEXLogix adapter; 1794-AENTR FLEX I/O EtherNet/IP adapter; ControlLogix 18 and earlier; CompactLogix 18 and earlier; GuardLogix 18 and earlier; SoftLogix 18 and earlier; CompactLogix controllers 19 and earlier; SoftLogix controllers 19 and earlier; ControlLogix controllers 20 and earlier; GuardLogix controllers 20 and earlier; and MicroLogix 1100 and 1400
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Rockwell Automation ControlLogix 远程拒绝服务漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Rockwell Automation ControlLogix提供工业自动化控制和信息产品。 Rockwell Automation ControlLogix在处理畸形CIP报文时存在安全漏洞，当向端口2222/TCP，Port 2222/UDP，Port 44818/TCP，Port 44818/UDP发送特制的CIP报文时，此漏洞可造成缓冲区溢出，造成NIC拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Rockwell Automation | 1756-ENBT, 1756-EWEB, 1768-ENBT, 1768-EWEB communication modules | All | - |
|
| Rockwell Automation | CompactLogix L32E and L35E controllers | All | - |
|
| Rockwell Automation | 1788-ENBT FLEXLogix adapter | All | - |
|
| Rockwell Automation | 1794-AENTR FLEX I/O EtherNet/IP adapter | All | - |
|
| Rockwell Automation | ControlLogix, CompactLogix, GuardLogix, and SoftLogix | 0 ~ 18 | - |
|
| Rockwell Automation | CompactLogix and SoftLogix controllers | 0 ~ 19 | - |
|
| Rockwell Automation | ControlLogix and GuardLogix controllers | 0 ~ 20 | - |
|
| Rockwell Automation | MicroLogix | 1100 | - |
|
II. Public POCs for CVE-2012-6438
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2012-6438 (1)
-
🔗 http://www.us-cert.gov/control_systems/pdf/ICSA-13-011-03.pdf x_refsource_MISC
Other References for CVE-2012-6438 (4)
Same Patch Batch · Rockwell Automation · 2013-01-24 · 8 CVEs total
| CVE-2012-6435 | Rockwell Automation ControlLogix PLC Improper Access Control | |
| CVE-2012-6436 | Rockwell Automation ControlLogix PLC Improper Input Validation | |
| CVE-2012-6437 | Rockwell Automation ControlLogix PLC Improper Authentication | |
| CVE-2012-6439 | Rockwell Automation ControlLogix PLC Improper Access Control | |
| CVE-2012-6440 | Rockwell Automation ControlLogix PLC Improper Input Validation | |
| CVE-2012-6441 | Rockwell Automation ControlLogix PLC Information Exposure | |
| CVE-2012-6442 | Rockwell Automation ControlLogix PLC Improper Access Control |
IV. Related Vulnerabilities
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CVE-2012-6435
Rockwell Automation ControlLogix PLC Improper Access Control -
CVE-2012-6436
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CVE-2012-6437
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CVE-2012-6439
Rockwell Automation ControlLogix PLC Improper Access Control -
CVE-2012-6440
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V. Comments for CVE-2012-6438
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