VDB-100600 · CVE-2017-8217 · GCVE-0-2017-8217

TP-LINK C2/C20i up to 0.9.1 iptables access control

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.
6.2	$0-$5k	0.00

Summaryinfo

A vulnerability labeled as critical has been found in TP-LINK C2 and C20i up to 0.9.1. Impacted is an unknown function of the component iptables. Executing a manipulation can lead to access control. This vulnerability is registered as CVE-2017-8217. It is possible to launch the attack remotely. No exploit is available. The application of restrictive firewalling is recommended.

Detailsinfo

A vulnerability was found in TP-LINK C2 and C20i up to 0.9.1. It has been declared as critical. This vulnerability affects an unknown part of the component iptables. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

TP-Link C2 and C20i devices through firmware 0.9.1 4.2 v0032.0 Build 160706 Rel.37961n have too permissive iptables rules, e.g., SNMP is not blocked on any interface.

The bug was discovered 04/25/2017. The weakness was published 04/25/2017 (Website). The advisory is shared for download at pierrekim.github.io. This vulnerability was named CVE-2017-8217 since 04/25/2017. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

Proper firewalling of is able to address this issue.

Similar entries are available at VDB-100601, VDB-100602 and VDB-100603. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

TP-LINK

Name

Version

License

commercial

Website

Vendor: https://www.tp-link.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.3
VulDB Meta Temp Score: 6.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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: Firewall
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/25/2017 🔍
04/25/2017 +0 days 🔍
04/25/2017 +0 days 🔍
04/25/2017 +0 days 🔍
04/26/2017 +1 days 🔍
06/19/2022 +1880 days 🔍

Sourcesinfo

Vendor: tp-link.com

Advisory: pierrekim.github.io
Status: Not defined

CVE: CVE-2017-8217 (🔍)
GCVE (CVE): GCVE-0-2017-8217
GCVE (VulDB): GCVE-100-100600
OSVDB: - CVE-2017-8217 - TP-Link - Multiple Products - Permissive Iptables Rules Issue

See also: 🔍

Entryinfo

Created: 04/26/2017 08:45
Updated: 06/19/2022 16:06
Replaces Duplicates: 🔍
Changes: 04/26/2017 08:45 (57), 09/21/2020 12:46 (2), 06/19/2022 16:06 (3)
Complete: 🔍
Cache ID: 216::103

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