CVE-2019-5176

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.

CVSS v3.1

5.5 MEDIUMCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0

2.1 LOWAV:L/AC:L/Au:N/C:N/I:N/A:P

EPSS

0.53% chance of exploitation in the next 30 days, 42th percentile

Published

2020-03-11

Updated

2024-08-04

Proof-of-concept exploits (1)

• https://talosintelligence.com/vulnerability_reports/TALOS-2019-0963

References

• CVE Record
• NVD entry

Related

• CVE-2019-5175
• CVE-2019-5177
• CVE-2019-5174
• CVE-2019-5178
• CVE-2019-5173
• CVE-2019-5179