An exploitable stack buffer overflow vulnerability vulnerability exists in the iocheckd service ‘I/O-Check’ functionality of WAGO PFC 200 Firmware version 03.02.02(14). An attacker can send a specially crafted packet to trigger the parsing of this cache file.The destination buffer sp+0x40 is overflowed with the call to sprintf() for any gateway values that are greater than 512-len(‘/etc/config-tools/config_default_gateway number=0 state=enabled value=‘) in length. A gateway value of length 0x7e2 will cause the service to crash.
References
Link | Resource |
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https://talosintelligence.com/vulnerability_reports/TALOS-2019-0963 | Exploit Mitigation Technical Description Third Party Advisory |
Configurations
Configuration 1 (hide)
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Information
Published : 2020-03-11 17:15
Updated : 2020-03-17 11:16
NVD link : CVE-2019-5176
Mitre link : CVE-2019-5176
JSON object : View
CWE
CWE-787
Out-of-bounds Write
Products Affected
wago
- pfc200_firmware
- pfc200