Multiple vulnerabilities in Tenda AC9 AC1200 Smart Dual-Band Gigabit WiFi Router



Published: 2019-11-22
Risk Low
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2019-5071
CVE-2019-5072
CWE-ID CWE-78
Exploitation vector Local
Public exploit N/A
Vulnerable software
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AC9 Router AC1200 Smart Dual-Band Gigabit WiFi Router
Hardware solutions / Routers for home users

Vendor Shenzhen Tenda Technology Co.,Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) OS Command Injection

EUVDB-ID: #VU22914

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-5071

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in the "dns1" POST parameter in the "/goform/WanParameterSetting" resource. A local user attacker can send a specially crafted HTTP POST request and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

AC9 Router AC1200 Smart Dual-Band Gigabit WiFi Router: 15.03.05.14 - 15.03.05.16


CPE2.3 External links

http://talosintelligence.com/vulnerability_reports/TALOS-2019-0861

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) OS Command Injection

EUVDB-ID: #VU22915

Risk: Low

CVSSv3.1: 6.8 [CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-5072

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

Exploit availability: No

Description

The vulnerability allows a local user to execute arbitrary shell commands on the target system.

The vulnerability exists due to improper input validation in the "dns2" POST parameter in the "/goform/WanParameterSetting" resource. A local user attacker can send a specially crafted HTTP POST request and execute arbitrary OS commands on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

AC9 Router AC1200 Smart Dual-Band Gigabit WiFi Router: 15.03.05.14 - 15.03.05.16


CPE2.3 External links

http://talosintelligence.com/vulnerability_reports/TALOS-2019-0861

Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected device in order to exploit this vulnerability.

The attacker would have to login to the system and perform certain actions in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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