VDB-96940 · CVE-2017-5159 · BID 95648

Phoenix Contact mGuard 8.4.0 Update Reset resource injection

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.
8.5	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Phoenix Contact mGuard 8.4.0 and classified as critical. This affects an unknown function of the component Update Handler. Executing a manipulation can lead to resource injection (Reset). This vulnerability is registered as CVE-2017-5159. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as critical was found in Phoenix Contact mGuard 8.4.0. This vulnerability affects an unknown code of the component Update Handler. The manipulation with an unknown input leads to a resource injection vulnerability (Reset). The CWE definition for the vulnerability is CWE-99. The product receives input from an upstream component, but it does not restrict or incorrectly restricts the input before it is used as an identifier for a resource that may be outside the intended sphere of control. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered on Phoenix Contact mGuard devices that have been updated to Version 8.4.0. When updating an mGuard device to Version 8.4.0 via the update-upload facility, the update will succeed, but it will reset the password of the admin user to its default value.

The bug was discovered 01/17/2017. The weakness was published 02/13/2017 (Website). The advisory is shared for download at securityfocus.com. This vulnerability was named CVE-2017-5159 since 01/03/2017. 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 vulnerability was handled as a non-public zero-day exploit for at least 27 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 95648†). Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

Phoenix Contact

Name

mGuard

Version

8.4.0

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.5

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

NVD Base Score: 9.8
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

Name: Reset
Class: Resource injection / Reset
CWE: CWE-99
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/03/2017 🔍
01/17/2017 +14 days 🔍
01/17/2017 +0 days 🔍
02/13/2017 +27 days 🔍
02/13/2017 +0 days 🔍
02/14/2017 +1 days 🔍
12/18/2020 +1403 days 🔍

Sourcesinfo

Advisory: securityfocus.com⛔
Status: Not defined

CVE: CVE-2017-5159 (🔍)
GCVE (CVE): GCVE-0-2017-5159
GCVE (VulDB): GCVE-100-96940
SecurityFocus: 95648 - Phoenix Contact mGuard CVE-2017-5159 Security Bypass Vulnerability
OSVDB: - CVE-2017-5159 - Phoenix Contact - mGuard - Password Reset Issue

Entryinfo

Created: 02/14/2017 09:19
Updated: 12/18/2020 06:42
Changes: 02/14/2017 09:19 (64), 12/18/2020 06:42 (4)
Complete: 🔍
Cache ID: 216::103