CVE-2018-12103 Information

Description

An issue was discovered on D-Link DIR-890L with firmware 1.21B02beta01 and earlier DIR-885L/R with firmware 1.21B03beta01 and earlier and DIR-895L/R with firmware 1.21B04beta04 and earlier devices (all hardware revisions). Due to the predictability of the /docs/captcha_(number).jpeg URI being local to the network but unauthenticated to the administrator’s panel an attacker can disclose the CAPTCHAs used by the access point and can elect to load the CAPTCHA of their choosing leading to unauthorized login attempts to the access point.

CVSS Vector

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Reference

http://seclists.org/fulldisclosure/2018/Jul/13 https://securityadvisories.dlink.com/announcement/publication.aspx?name=SAP10099

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

HIGH

Base Score

NONE

Base Severity

6.5