National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2018-12103 Detail

Current 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.

Source:  MITRE
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.5 MEDIUM
Vector: AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N (V3 legend)
Impact Score: 3.6
Exploitability Score: 2.8


Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): High
Availability (A): None

CVSS v2.0 Severity and Metrics:

Base Score: 3.3 LOW
Vector: (AV:A/AC:L/Au:N/C:N/I:P/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 6.5


Access Vector (AV): Local_Network
Access Complexity (AC): Low
Authentication (AU): None
Confidentiality (C): None
Integrity (I): Partial
Availability (A): None
Additional Information:
Allows unauthorized modification

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://seclists.org/fulldisclosure/2018/Jul/13 Mailing List Third Party Advisory
https://securityadvisories.dlink.com/announcement/publication.aspx?name=SAP10099 Vendor Advisory

Technical Details

Vulnerability Type (View All)

  • Improper Access Control (CWE-284)

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:o:d-link:dir-890l_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
1.21b02beta01
Running on/with
 cpe:2.3:h:d-link:dir-890l:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 2 ( hide )
 cpe:2.3:o:d-link:dir-885l\/r_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
1.21b03beta01
Running on/with
 cpe:2.3:h:d-link:dir-885\/r:-:*:*:*:*:*:*:*
     Show Matching CPE(s)

Configuration 3 ( hide )
 cpe:2.3:o:d-link:dir-895l\/r_firmware:*:*:*:*:*:*:*:*
     Show Matching CPE(s)
Up to (including)
1.21b04beta01
Running on/with
 cpe:2.3:h:d-link:dir-895\/r:-:*:*:*:*:*:*:*
     Show Matching CPE(s)


Change History

5 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2018-12103
NVD Published Date:
07/05/2018
NVD Last Modified:
03/13/2019