Privilege escalation in ADB Broadband Gateways / Routers

Published: 2018-07-09

Risk	Low
Patch available	YES
Number of vulnerabilities	3
CVE-ID	CVE-2018-13108 CVE-2018-13109 CVE-2018-13110
CWE-ID	CWE-264 CWE-862
Exploitation vector	Local
Public exploit	Public exploit code for vulnerability #1 is available. Public exploit code for vulnerability #2 is available. Public exploit code for vulnerability #3 is available.
Vulnerable software	ADB VV 2220 Hardware solutions / Routers & switches, VoIP, GSM, etc ADB VV 5522 Hardware solutions / Routers & switches, VoIP, GSM, etc ADB DV 2210 Hardware solutions / Routers & switches, VoIP, GSM, etc ADB P.RG AV4202N Hardware solutions / Routers & switches, VoIP, GSM, etc
Vendor	Advanced Digital Broadcast

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Privilege escalation

EUVDB-ID: #VU13615

Risk: Low

CVSSv4.0: 7.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2018-13108

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: Yes

Description

The vulnerability allows a local attacker can gain elevated privileges on the target system.

The weakness exists in ADB broadband gateways / routers based on the Epicentro platform due to a local root jailbreak vulnerability. A local attacker can gain root access to the device, and extract further information such as sensitive configuration data of the ISP (e.g., VoIP credentials) or attack the internal network of the ISP.

Mitigation

Install update from vendor's website.

Vulnerable software versions

ADB VV 2220: E_9.0.6

ADB VV 5522: E_8.3.0

ADB DV 2210: E_5.3.0

ADB P.RG AV4202N: E_3.3.0

CPE2.3

External links

https://seclists.org/fulldisclosure/2018/Jul/17

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. However, proof of concept for this vulnerability is available.

2) Authorization bypass

EUVDB-ID: #VU13616

Risk: Low

CVSSv4.0: 7.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2018-13109

CWE-ID: CWE-862 - Missing Authorization

Exploit availability: Yes

Description

The vulnerability allows a local attacker can gain elevated privileges on the target system.

The weakness exists in ADB broadband gateways / routers based on the Epicentro platform due to authorization bypass. A local attacker can access and manipulate settings within the web interface that are forbidden to end users (e.g., by the ISP) and enable the TELNET server or other settings as well.

Mitigation

Install update from vendor's website.

Vulnerable software versions

ADB VV 2220: E_9.0.6

ADB VV 5522: E_8.3.0

ADB DV 2210: E_5.3.0

ADB P.RG AV4202N: E_3.3.0

CPE2.3

External links

https://seclists.org/fulldisclosure/2018/Jul/18

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. However, proof of concept for this vulnerability is available.

3) Privilege escalation

EUVDB-ID: #VU13617

Risk: Low

CVSSv4.0: 7.1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear]

CVE-ID: CVE-2018-13110

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: Yes

Description

The vulnerability allows a local attacker can gain elevated privileges on the target system.

The weakness exists in ADB broadband gateways / routers based on the Epicentro platform due to unspecified flaw. A local attacker can gain access to the command line interface (CLI) if previously disabled by the ISP, escalate privileges, and perform further attacks.

Mitigation

Install update from vendor's website.

Vulnerable software versions

ADB VV 2220: E_9.0.6

ADB VV 5522: E_8.3.0

ADB DV 2210: E_5.3.0

ADB P.RG AV4202N: E_3.3.0

CPE2.3

External links

https://seclists.org/fulldisclosure/2018/Jul/19

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. However, proof of concept for this vulnerability is available.