VDB-218996 · CVE-2022-3738 · VDE-2022-054

WAGO PFC100 Backup File missing authentication

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.
5.1	$0-$5k	0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in WAGO PFC100, PFC200, Touch Panel 600, Compact Controller CC100 and Edge Controller. This affects an unknown function of the component Backup File Handler. Such manipulation leads to missing authentication. This vulnerability is documented as CVE-2022-3738. The attack can be executed remotely. There is not any exploit available. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability was found in WAGO PFC100, PFC200, Touch Panel 600, Compact Controller CC100 and Edge Controller. It has been rated as critical. Affected by this issue is an unknown functionality of the component Backup File Handler. The manipulation with an unknown input leads to a missing authentication vulnerability. Using CWE to declare the problem leads to CWE-306. The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources. Impacted is confidentiality. CVE summarizes:

The vulnerability allows a remote unauthenticated attacker to download a backup file, if one exists. That backup file might contain sensitive information like credentials and cryptographic material. A valid user has to create a backup after the last reboot for this attack to be successfull.

The weakness was released 01/19/2023 as VDE-2022-054. The advisory is shared for download at cert.vde.com. This vulnerability is handled as CVE-2022-3738 since 10/28/2022. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

Applying the patch FW22 Patch 1 is able to eliminate this problem.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Vendor

WAGO

Name

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.9
NVD Vector: 🔍

CNA Base Score: 5.4
CNA Vector (CERT VDE): 🔍

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: 🔍

Exploitinginfo

Class: Missing authentication
CWE: CWE-306 / CWE-287
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: Patch
Status: 🔍

0-Day Time: 🔍

Patch: FW22 Patch 1

Timelineinfo

10/28/2022 🔍
01/19/2023 +83 days 🔍
01/19/2023 +0 days 🔍
02/15/2023 +27 days 🔍

Sourcesinfo

Advisory: VDE-2022-054
Status: Not defined

CVE: CVE-2022-3738 (🔍)
GCVE (CVE): GCVE-0-2022-3738
GCVE (VulDB): GCVE-100-218996

Entryinfo

Created: 01/19/2023 14:30
Updated: 02/15/2023 13:37
Changes: 01/19/2023 14:30 (49), 02/15/2023 13:37 (12)
Complete: 🔍
Cache ID: 216::103