Tenda D820R ADSL2-2+ Modem DNS privileges management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.6$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Tenda D820R ADSL2-2+ Modem. The impacted element is an unknown function of the component DNS. Such manipulation leads to privileges management. The attack can be launched remotely. Moreover, an exploit is present. Restrictive firewalling should be applied.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Tenda D820R ADSL2-2+ Modem (affected version not known). Affected by this issue is some unknown functionality of the component DNS. The manipulation with an unknown input leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability.

The weakness was disclosed 01/19/2017 by Todor Donev as EDB-ID 41117 as not defined exploit (Exploit-DB). The advisory is available at exploit-db.com. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are unknown but a public exploit is available. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

A public exploit has been developed by Todor Donev in Bash and been published immediately after the advisory. The exploit is available at exploit-db.com. It is declared as functional. The code used by the exploit is:

GET -e "http://$1/dnscfg.cgi?dnsPrimary=$2&dnsSecondary=$3&dnsDynamic=0&dnsRefresh=1" 0&> /dev/null <&1

Addressing this vulnerability is possible by firewalling .

The vulnerability is also documented in the vulnerability database at Exploit-DB (41117). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 6.6

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Functional
Author: Todor Donev
Programming Language: 🔍
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Timelineinfo

01/19/2017 🔍
01/19/2017 +0 days 🔍
01/19/2017 +0 days 🔍
01/22/2017 +3 days 🔍
07/29/2020 +1284 days 🔍

Sourcesinfo

Vendor: tenda.com.cn

Advisory: EDB-ID 41117
Researcher: Todor Donev
Status: Not defined

GCVE (VulDB): GCVE-100-95762
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 01/22/2017 21:27
Updated: 07/29/2020 15:44
Changes: 01/22/2017 21:27 (46), 07/29/2020 15:44 (2)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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