6.5
MEDIUM
CVE-2018-12103
D-Link CAPTCHA Disclosure Vulnerability
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.

INFO

Published Date :

July 5, 2018, 8:29 p.m.

Last Modified :

April 26, 2023, 7:27 p.m.

Remotely Exploitable :

No

Impact Score :

3.6

Exploitability Score :

2.8
Affected Products

The following products are affected by CVE-2018-12103 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 D-link dir-885l\/r_firmware
2 D-link dir-895l\/r_firmware
1 Dlink dir-890l_firmware
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2018-12103.

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

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2018-12103 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2018-12103 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CPE Deprecation Remap by [email protected]

    Apr. 26, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:d-link:dir-890l_firmware:*:*:*:*:*:*:*:* versions from (including) 1.21b02beta01 OR *cpe:2.3:o:dlink:dir-890l_firmware:*:*:*:*:*:*:*:* versions from (including) 1.21b02beta01
  • CPE Deprecation Remap by [email protected]

    Apr. 26, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:h:d-link:dir-890l:-:*:*:*:*:*:*:* OR *cpe:2.3:h:dlink:dir-890l:-:*:*:*:*:*:*:*
  • CWE Remap by [email protected]

    Oct. 03, 2019

    Action Type Old Value New Value
    Changed CWE CWE-284 CWE-287 CWE-200 CWE-863
  • Modified Analysis by [email protected]

    Mar. 13, 2019

    Action Type Old Value New Value
    Changed Reference Type https://securityadvisories.dlink.com/announcement/publication.aspx?name=SAP10099 No Types Assigned https://securityadvisories.dlink.com/announcement/publication.aspx?name=SAP10099 Vendor Advisory
    Changed CPE Configuration AND OR *cpe:2.3:o:d-link:dir-890l_a2_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:d-link:dir-890l_a2:-:*:*:*:*:*:*:* AND OR *cpe:2.3:o:d-link:dir-890l_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.21b02beta01 OR cpe:2.3:h:d-link:dir-890l:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:d-link:dir-885l\/r_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.21b03beta01 OR cpe:2.3:h:d-link:dir-885\/r:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:d-link:dir-895l\/r_firmware:*:*:*:*:*:*:*:* versions up to (including) 1.21b04beta01 OR cpe:2.3:h:d-link:dir-895\/r:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Mar. 12, 2019

    Action Type Old Value New Value
    Changed Description An issue was discovered on D-Link DIR-890L A2 devices. 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. 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.
    Added Reference https://securityadvisories.dlink.com/announcement/publication.aspx?name=SAP10099 [No Types Assigned]
  • CVE Modified by [email protected]

    Mar. 11, 2019

    Action Type Old Value New Value
    Changed 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. An issue was discovered on D-Link DIR-890L A2 devices. 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.
    Removed Reference https://securityadvisories.dlink.com/announcement/publication.aspx?name=SAP10099 [No Types Assigned]
  • CVE Modified by [email protected]

    Mar. 11, 2019

    Action Type Old Value New Value
    Changed Description An issue was discovered on D-Link DIR-890L A2 devices. 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. 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.
    Added Reference https://securityadvisories.dlink.com/announcement/publication.aspx?name=SAP10099 [No Types Assigned]
  • Initial Analysis by [email protected]

    Sep. 04, 2018

    Action Type Old Value New Value
    Added CVSS V2 (AV:A/AC:L/Au:N/C:N/I:P/A:N)
    Added CVSS V3 AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
    Changed Reference Type http://seclists.org/fulldisclosure/2018/Jul/13 No Types Assigned http://seclists.org/fulldisclosure/2018/Jul/13 Mailing List, Third Party Advisory
    Added CWE CWE-284
    Added CPE Configuration AND OR *cpe:2.3:o:d-link:dir-890l_a2_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:d-link:dir-890l_a2:-:*:*:*:*:*:*:*
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2018-12103 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2018-12103 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.06 }} 0.00%

score

0.27864

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability