VDB-212509 · CVE-2020-21016 · GCVE-0-2020-21016

D-Link DIR-846 100A35 SetGuestWLanSettings.php privilege escalation

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.1	$5k-$25k	0.00

Summaryinfo

A vulnerability has been found in D-Link DIR-846 100A35 and classified as very critical. Affected by this vulnerability is an unknown functionality of the file HNAP1/control/SetGuestWLanSettings.php. This manipulation causes an unknown weakness. The identification of this vulnerability is CVE-2020-21016. It is possible to initiate the attack remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as very critical was found in D-Link DIR-846 100A35 (Router Operating System). Affected by this vulnerability is an unknown part of the file HNAP1/control/SetGuestWLanSettings.php. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

D-Link DIR-846 devices with firmware 100A35 allow remote attackers to execute arbitrary code as root via HNAP1/control/SetGuestWLanSettings.php.

The weakness was shared 10/31/2022. The advisory is shared at github.com. This vulnerability is known as CVE-2020-21016 since 08/13/2020. Technical details are known, but no exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 11/26/2022).

By approaching the search of inurl:HNAP1/control/SetGuestWLanSettings.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

Router Operating System

Vendor

D-Link

Name

DIR-846

Version

100A35

License

commercial

Website

Vendor: https://www.dlink.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.3
VulDB Meta Temp Score: 9.1

VulDB Base Score: 8.8
VulDB Temp Score: 8.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Privilege escalation
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/13/2020 🔍
10/31/2022 +809 days 🔍
10/31/2022 +0 days 🔍
11/26/2022 +26 days 🔍

Sourcesinfo

Vendor: dlink.com

Advisory: github.com
Status: Not defined

CVE: CVE-2020-21016 (🔍)
GCVE (CVE): GCVE-0-2020-21016
GCVE (VulDB): GCVE-100-212509

Entryinfo

Created: 10/31/2022 17:53
Updated: 11/26/2022 15:07
Changes: 10/31/2022 17:53 (37), 11/26/2022 15:07 (11)
Complete: 🔍
Cache ID: 216::103