Cambium ePMP SNMP Community String 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.
7.2	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Cambium ePMP and classified as problematic. The impacted element is an unknown function of the component SNMP. Executing a manipulation as part of Community String can lead to access control. This vulnerability is handled as CVE-2017-7922. The attack can be executed remotely. There is not any exploit available. Changing the configuration settings is recommended.

Detailsinfo

A vulnerability classified as critical was found in Cambium ePMP (the affected version is unknown). This vulnerability affects an unknown code of the component SNMP. The manipulation as part of a Community String leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An Improper Privilege Management issue was discovered in Cambium Networks ePMP. The privileges for SNMP community strings are not properly restricted, which may allow an attacker to gain access to sensitive information and possibly allow for configuration changes.

The bug was discovered 06/15/2017. The weakness was released 06/21/2017 by Karn Ganeshen (Website). The advisory is shared for download at securityfocus.com. This vulnerability was named CVE-2017-7922 since 04/18/2017. 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.

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.

It is possible to mitigate the problem by applying the configuration setting .

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 99083†). Entry connected to this vulnerability is available at VDB-102735. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Cambium

Name

• ePMP

CPE 2.3info

• 🔍

CPE 2.2info

• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.3

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

NVD Base Score: 7.6
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-264
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

OpenVAS ID: 802243
OpenVAS Name: Report default community names of the SNMP Agent
OpenVAS File: 🔍
OpenVAS Family: 🔍

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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Config
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-2017-7922 (🔍)
GCVE (CVE): GCVE-0-2017-7922
GCVE (VulDB): GCVE-100-102736
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 16:38
Changes: 06/22/2017 08:58 (68), 10/19/2019 16:38 (4)
Complete: 🔍
Cache ID: 216:158:103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

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