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CVE-2018-20512: Cdatatec Epon Cpe Wifi Devices Firmware: Privilege escalation
CVE-2018-20512 is rated critical with a CVSS v3.0 base score of 9.8 and NVD lists Cdatatec Epon Cpe Wifi Devices Firmware as the affected product. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.
Vulnerability description
EPON CPE-WiFi devices 2.0.4-X000 are vulnerable to escalation of privileges by sending cooLogin=1, cooUser=admin, and timestamp=-1 cookies.
Severity breakdown
CVSS v3.0 9.8: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
- Attack complexity: Low. No special conditions; the attack can be repeated reliably.
- Privileges required: None. No account or prior access is needed.
- User interaction: None. No action from any user is needed.
- Scope: Unchanged. Impact stays within the vulnerable component.
- Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
- Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
- Availability impact: High. Total loss of availability; the component can be shut down.
Underlying weakness
CWE-565: Reliance on Cookies without Validation and Integrity Checking
The product relies on the existence or values of cookies when performing security-critical operations, but it does not properly ensure that the setting is valid for the associated user.
Affected products
- Cdatatec Epon Cpe Wifi Devices Firmware: 2.0.4-x000