VDB-101546 · CVE-2017-9138 · GCVE-0-2017-9138

Tenda FH1202/F1202/F1200 up to 1.2.0 Debug Interface memory corruption

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.
6.9	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Tenda FH1202, F1202 and F1200 up to 1.2.0 and classified as critical. Impacted is an unknown function of the component Debug Interface. Such manipulation leads to memory corruption. This vulnerability is documented as CVE-2017-9138. The attack can be executed directly on the physical device. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Tenda FH1202, F1202 and F1200 up to 1.2.0. It has been rated as critical. Affected by this issue is an unknown code of the component Debug Interface. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

There is a debug-interface vulnerability on some Tenda routers (FH1202/F1202/F1200: versions before 1.2.0.20). After connecting locally to a router in a wired or wireless manner, one can bypass intended access restrictions by sending shell commands directly and reading their results, or by entering shell commands that change this router's username and password.

The bug was discovered 05/21/2017. The weakness was released 05/21/2017 (Website). The advisory is available at tendacn.com. This vulnerability is handled as CVE-2017-9138 since 05/21/2017. Local access is required to approach this attack. A simple authentication is needed for exploitation. The technical details are unknown and an exploit is not available.

Upgrading to version 1.2.0.20 eliminates this vulnerability.

Entry connected to this vulnerability is available at VDB-101547. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Router Operating System

Vendor

Tenda

Name

Version

License

commercial

Website

Vendor: https://www.tenda.com.cn/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.1

VulDB Base Score: 6.6
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.0
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: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Yes
Local: Yes
Remote: Partially

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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: FH1202/F1202/F1200 1.2.0.20

Timelineinfo

05/21/2017 🔍
05/21/2017 +0 days 🔍
05/21/2017 +0 days 🔍
05/21/2017 +0 days 🔍
05/22/2017 +1 days 🔍
10/01/2020 +1228 days 🔍

Sourcesinfo

Vendor: tenda.com.cn

Advisory: tendacn.com
Status: Not defined

CVE: CVE-2017-9138 (🔍)
GCVE (CVE): GCVE-0-2017-9138
GCVE (VulDB): GCVE-100-101546
OSVDB: - CVE-2017-9138 - Tendacn - F1200 Firmware - High

See also: 🔍

Entryinfo

Created: 05/22/2017 08:48
Updated: 10/01/2020 07:26
Changes: 05/22/2017 08:48 (59), 10/01/2020 07:26 (2)
Complete: 🔍
Cache ID: 216::103

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