Summaryinfo

A vulnerability labeled as critical has been found in Allen Bradley MicroLogix 1400 up to 21.2. This affects an unknown function of the component File Permission. The manipulation as part of Crafted Packet results in access control. This vulnerability is known as CVE-2017-14472. It is possible to launch the attack remotely. No exploit is available. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Detailsinfo

A vulnerability, which was classified as critical, was found in Allen Bradley MicroLogix 1400 up to 21.2. Affected is an unknown part of the component File Permission. The manipulation as part of a Crafted Packet 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. CVE summarizes:

An exploitable access control vulnerability exists in the data, program, and function file permissions functionality of Allen Bradley Micrologix 1400 Series B FRN 21.2 and before. A specially crafted packet can cause a read or write operation resulting in disclosure of sensitive information, modification of settings, or modification of ladder logic. An attacker can send unauthenticated packets to trigger this vulnerability. Required Keyswitch State: Any Description: Requests a specific set of bytes from an undocumented data file and returns the ASCII version of the master password.

The bug was discovered 03/28/2018. The weakness was published 04/05/2018 (Website). The advisory is shared for download at talosintelligence.com. This vulnerability is traded as CVE-2017-14472 since 09/13/2017. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1068.

The vulnerability was handled as a non-public zero-day exploit for at least 8 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.

Similar entries are available at VDB-115850, VDB-115851, VDB-115852 and VDB-115853. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Allen Bradley

Name

• MicroLogix 1400

Version

• 21.0
• 21.1
• 21.2

CPE 2.3info

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CPE 2.2info

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