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CVE-2018-20675: D-Link DIR-822 C1: Authentication bypass
CVE-2018-20675 is rated critical with a CVSS v3.1 base score of 9.8 and NVD lists 4 affected products, including D-Link Dir 822 Firmware. 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
D-Link DIR-822 C1 before v3.11B01Beta, DIR-822-US C1 before v3.11B01Beta, DIR-850L A* before v1.21B08Beta, DIR-850L B* before v2.22B03Beta, and DIR-880L A* before v1.20B02Beta devices allow authentication bypass.
Severity breakdown
CVSS v3.1 9.8: CVSS:3.1/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-287: Improper Authentication
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
Affected products
- D-Link Dir 822 Firmware: up to and including 3.10b06
- D-Link Dir 822 Us Firmware: up to and including 3.10b06
- D-Link Dir 850l Firmware: up to and including 1.21b07; up to and including 2.21b01; 2.22b02 beta
- D-Link Dir 880l Firmware: up to and including 1.07.b08; 1.20b01 beta