Spectre meltdown1/11/2024 ![]() It is thus recommended that the Web Page Layer be used only to load known and trusted sites and as much as possible ad-free, as ads can be a source of JavaScript malware. Therefore, the only data that could be stolen is data on the site at the URI of the Web Page Layer, or other site loaded by it, plus the two sensitive pieces detailed above if they are used. The other is the HTTP proxy’s username and password, if one is configured on the device. One is the username and password for the site being loaded, if the URI of the Web Page Layer matches one among the saved passwords configured on the device. The SpinetiX firmware hands at most two pieces of sensitive information to the HTML interpreter. As the HTML interpreter runs in a separate security context, it is only able to steal data held by the HTML interpreter itself. This malware would be run by the JavaScript engine of the HTML interpreter and, if successful, could steal data. As such, it could be possible for malware to be introduced via a malicious or compromised web site. The HTML interpreter runs in a separate security context, but may be used to render third party content outside the control of the content author. As long as good practices for content authoring are followed it should not be possible to introduce malware into the JavaScript engine inside the SVG interpreter. The JavaScript code run inside the SVG interpreter is under the control of the content creator. The HTML interpreter takes care of rendering Web Page Layers, while the SVG interpreter renders all other content. ![]() The only vector through which an attacker can run routines to exploit these vulnerabilities is via the JavaScript engines in the SVG and HTML interpreters. Therefore, direct exploitation of the Spectre vulnerabilities is believed to not be possible. The SpinetiX firmware running on its products is a tightly controlled environment and does not allow running any third-party software. This method is dependent on being able to run malware locally on the target device, which means it is important for device owners to follow good security practices by keeping the firmware up to date, having protected their devices with good passwords and having a sound policy for content acquisition and authoring. These vulnerabilities can allow to steal data which is resident in memory by using a cache timing side-channel attack. However, DiVA, HMP300 and HMP350 products are vulnerable to Spectre (CVE-2017-5753 and CVE-2017-5715). Therefore, no SpinetiX products are vulnerable to Meltdown (CVE-2017-5754) or Spectre-NG (CVE-2018-3639 and CVE-2018-3640). The ARM Cortex-A8 processor used on DiVA, HMP300 and HMP350 products is vulnerable only to Spectre, it is not vulnerable to Meltdown nor Spectre-NG. ![]()
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