A vulnerability, which was classified as very critical, was found in Siemens SIMATIC S7-1500 Cpu up to 1.1.1 (SCADA Software). Affected is some unknown functionality of the component Firmware. The manipulation with an unknown input leads to a remote code execution vulnerability. CWE is classifying the issue as CWE-331. The product uses an algorithm or scheme that produces insufficient entropy, leaving patterns or clusters of values that are more likely to occur than others. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

The random-number generator on Siemens SIMATIC S7-1500 CPU PLC devices with firmware before 1.5.0 does not have sufficient entropy, which makes it easier for remote attackers to defeat cryptographic protection mechanisms and hijack sessions via unspecified vectors.

The weakness was shared 03/16/2014 (Website). The advisory is shared for download at ics-cert.us-cert.gov. This vulnerability is traded as CVE-2014-2251 since 02/28/2014. 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 current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/03/2022). The MITRE ATT&CK project declares the attack technique as T1600.001.

Upgrading to version 1.1.2 eliminates this vulnerability.

The entries 66688, 66687, 66686 and 66685 are related to this item.

Productinfo

Type

• SCADA Software

Vendor

• Siemens

Name

• SIMATIC S7-1500 Cpu

Version

• 1.1.0
• 1.1.1

License

• commercial

CPE 2.3info

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• 🔍
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CPE 2.2info

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• 🔍
• 🔍

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