Cambium ePMP SNMP 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.
6.5	$0-$5k	0.00

Summaryinfo

A vulnerability has been found in Cambium ePMP and classified as critical. The affected element is an unknown function of the component SNMP. Performing a manipulation results in access control. This vulnerability is known as CVE-2017-7918. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability classified as critical has been found in Cambium ePMP (the affected version unknown). This affects an unknown part of the component SNMP. The manipulation with an unknown input leads to a access control vulnerability. CWE is classifying the issue as CWE-284. The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

An Improper Access Control issue was discovered in Cambium Networks ePMP. After a valid user has used SNMP configuration export, an attacker is able to remotely trigger device configuration backups using specific MIBs. These backups lack proper access control and may allow access to sensitive information and possibly allow for configuration changes.

The bug was discovered 06/15/2017. The weakness was published 06/21/2017 by Karn Ganeshen (Website). It is possible to read the advisory at securityfocus.com. This vulnerability is uniquely identified as CVE-2017-7918 since 04/18/2017. It is possible to initiate the attack remotely. A authentication is necessary for exploitation. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

It is declared as highly functional. The vulnerability was handled as a non-public zero-day exploit for at least 6 days. During that time the estimated underground price was around $0-$5k.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 99083†). Similar entry is available at VDB-102736. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• Cambium

Name

• ePMP

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.5

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

NVD Base Score: 6.8
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: Access control
CWE: CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Highly functional

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

MetaSploit ID: epmp1000_snmp_loot.rb
MetaSploit Name: SNMP Community Login Scanner
MetaSploit File: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/18/2017 🔍
06/14/2017 +57 days 🔍
06/15/2017 +1 days 🔍
06/21/2017 +6 days 🔍
06/21/2017 +0 days 🔍
06/22/2017 +1 days 🔍
10/19/2019 +849 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Researcher: Karn Ganeshen
Status: Not defined

CVE: CVE-2017-7918 (🔍)
GCVE (CVE): GCVE-0-2017-7918
GCVE (VulDB): GCVE-100-102735
SecurityFocus: 99083 - Cambium Networks ePMP ICSA-17-166-01 Privilege Escalation and Access Bypass Vulnerabilities

See also: 🔍

Entryinfo

Created: 06/22/2017 08:58
Updated: 10/19/2019 16:35
Changes: 06/22/2017 08:58 (62), 10/19/2019 16:35 (4)
Complete: 🔍
Cache ID: 216:897:103

Be aware that VulDB is the high quality source for vulnerability data.

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