WAGO: Web-Based Management Authentication Vulnerabilities
With special crafted requests it is possible to get sensitive information, in this case the password hashes, by measuring response delay. With a substantial amount of time this data can be used to calculate the passwords of the Web-Based Management users. In case of CVE 2019-5134, the password salt can also be extracted.
describes (2)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2019-5135US | medium5.3OT elevated | — | ||
An exploitable timing discrepancy vulnerability exists in the authentication functionality of the Web-Based Management (WBM) web application on WAGO PFC100/200 controllers. The WBM… | ||||
| CVE-2019-5134US | high7.5 | — | ||
An exploitable regular expression without anchors vulnerability exists in the Web-Based Management (WBM) authentication functionality of WAGO PFC200 versions 03.00.39(12) and 03.01… | ||||
references
External citations — patches, advisories, analysis.
remediations (2)
- Fixed
Use strong passwords for all user accounts, especially for administrative user accounts on the device. Follow the instructions in WAGOs handbook Cyber Security for Controller Restrict network access to the device. Do not directly connect the device to the internet Disable unused TCP/UDP-ports Solution Update the devices to standard firmware 15.
- Fixed
Use strong passwords for all user accounts, especially for administrative user accounts on the device. Follow the instructions in WAGOs handbook Cyber Security for Controller Restrict network access to the device. Do not directly connect the device to the internet Disable unused TCP/UDP-ports Solution Update the devices to standard firmware 15.
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