Vulnerability Monitor

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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.

Published

2020-03-12T00:15:18.163

Last Modified

2024-11-21T04:44:29.730

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.5 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:N/I:N/A:P

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

3.9

Impact Score

2.9

Weaknesses

Type: Primary
CWE-787

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	wago	pfc200_firmware	03.02.02\(14\)	Yes
Hardware	wago	pfc200	-	No

References

https://talosintelligence.com/vulnerability_reports/TALOS-2019-0963 Exploit, Mitigation, Technical Description, Third Party Advisory ([email protected])
https://talosintelligence.com/vulnerability_reports/TALOS-2019-0963 Exploit, Mitigation, Technical Description, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)