Stack Buffer Overflow in WAGO PFC 200 Firmware by WAGO
CVE-2019-5178

7.8HIGH

Key Information:

Vendor
Wago
Status
Wago Pfc200
Vendor
CVE Published:
12 March 2020

Summary

An exploitable stack buffer overflow exists in the iocheckd service's I/O-Check functionality within WAGO PFC 200 Firmware. An attacker can send a specially crafted packet that, when parsed, causes an overflow of the destination buffer. The overflow occurs during hostname value processing, specifically if the provided hostname exceeds a certain length, leading to potential service crashes. This vulnerability highlights the importance of secure coding practices and robust validation of input data.

Affected Version(s)

WAGO PFC200 Firmware version 03.02.02(14)

References

https://talosintelligence.com/vulnerability_reports/TALOS...
x_refsource_MISC

CVSS V3.1

Score:
7.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.