Quantum Secular Labs / Blog / Advisories
CVE-2018-18871: Gigasetpro Maxwell Basic Firmware: Authentication bypass
CVE-2018-18871 is rated critical with a CVSS v3.0 base score of 9.8 and NVD lists Gigasetpro Maxwell Basic 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
Missing password verification in the web interface on Gigaset Maxwell Basic VoIP phones with firmware 2.22.7 would allow a remote attacker (in the same network as the device) to change the admin password without authentication (and without knowing the original password).
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-640: Weak Password Recovery Mechanism for Forgotten Password
The product contains a mechanism for users to recover or change their passwords without knowing the original password, but the mechanism is weak.
Affected products
- Gigasetpro Maxwell Basic Firmware: 2.22.7