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>Posts tagged "Siemens"

(Eduard Kovacs – SecurityWeek) – Siemens recently updated its security bulletin for the Meltdown and Spectre vulnerabilities to inform customers of the latest variants, specifically the ones known as LazyFP and Spectre 1.1.

Several industrial control systems (ICS) vendors published security advisories for the CPU flaws shortly after they were disclosed in early January. Siemens published a bulletin on speculative side-channel vulnerabilities on January 11.

In late May, the company updated its bulletin to include information about Variant 3a and Variant 4, which are also known as Spectre-NG. On Tuesday, Siemens once again updated the security bulletin to describe the variants known as LazyFP, a medium severity Meltdown-like flaw disclosed in mid-June and tracked as CVE-2018-3665, and Spectre 1.1, disclosed earlier this month and tracked as CVE-2017-5753.

LazyFP is related to the floating point unit (FPU), also known as the math coprocessor. Researchers discovered that if certain conditions are met an attacker may be able to access FPU state data, which can contain sensitive information, such as cryptographic keys.

Spectre 1.1, described as a bounds check bypass store (BCBS) issue, was disclosed along with Spectre 1.2. Intel awarded $100,000 to the researchers who identified these variants.

While LazyFP and Spectre 1.1 are related to the original Meltdown and Spectre vulnerabilities, CPU and operating system vendors are not as concerned about their impact.

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Siemens has advised customers to keep an eye out for software and firmware updates provided for operating systems and processors, but warned that some of these updates “can result in compatibility, performance or stability issues.”

The German industrial giant continues to analyze the impact of these vulnerabilities on its products.

In the case of the original Meltdown and Spectre flaws, they have been found to impact many Siemens products, including SIMATIC, RUGGEDCOM, SIMOTION, SINEMA and SINUMERIK devices. The company has released both software and BIOS updates, along with workarounds and mitigations.

Related: Siemens Patches Flaws in SIMATIC Controllers, Mobile Apps

Related: Flaws Expose Siemens Central Plant Clocks to Attacks

(Eduard Kovacs - SecurityWeek) - Siemens recently updated its security bulletin for the Meltdown and Spectre vulnerabilities to inform customers of the latest variants, specifically the ones known as LazyFP and Spectre 1.1. Several industrial control systems (ICS) vendors published security advisories for the CPU flaws shortly after they were disclosed in early January. Siemens published a bulletin on speculative side-channel vulnerabilities on January 11. In late May, the company updated its bulletin to include information about Variant 3a and Variant 4,

(SecurityWeek - Eduard Kovacs) Siemens informed customers on Tuesday that some of its SICLOCK central plant clocks are affected by several vulnerabilities, including ones that have been rated “critical.” Siemens SICLOCK devices are used to synchronize time in industrial plants. The central plant clock ensures stability in case of a failure or loss of reception at the primary time source. According to the German industrial giant, SICLOCK systems are affected by a total of six vulnerabilities. The security holes have been assigned

(Eduard Kovacs / SecurityWeek) - Industrial giant Siemens this week warned that critical vulnerabilities have been found in some of its telecontrol and building automation products, and revealed that some SIMATIC systems are affected by a high severity flaw. One advisory published by the company describes several critical and high severity flaws affecting Siveillance and Desigo building automation products. The security holes exist due to the use of a vulnerable version of a Gemalto license management system (LMS). The bugs affect Gemalto