IMM2 up to 4.4 CIM Request resource consumption

Summaryinfo

A vulnerability classified as problematic was found in IMM2 up to 4.4. The impacted element is an unknown function of the component CIM. Executing a manipulation as part of Request can lead to resource consumption. The identification of this vulnerability is CVE-2017-3768. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability has been found in IMM2 up to 4.4 and classified as problematic. This vulnerability affects an unknown function of the component CIM. The manipulation as part of a Request leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability. CVE summarizes:

An unprivileged attacker with connectivity to the IMM2 could cause a denial of service attack on the IMM2 (Versions earlier than 4.4 for Lenovo System x and earlier than 6.4 for IBM System x). Flooding the IMM2 with a high volume of authentication failures via the Common Information Model (CIM) used by LXCA and OneCLI and other tools can exhaust available system memory which can cause the IMM2 to reboot itself until the requests cease.

The bug was discovered 01/23/2018. The weakness was shared 01/26/2018 (Website). The advisory is shared for download at support.lenovo.com. This vulnerability was named CVE-2017-3768 since 12/16/2016. The exploitation appears to be easy. 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 T1499.

The vulnerability was handled as a non-public zero-day exploit for at least 3 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.

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Productinfo

Name

• IMM2

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4

CPE 2.3info

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CPE 2.2info

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