Lenovo has patched a trio of bugs that could be abused to perform UEFI attacks.
Discovered by ESET researcher Martin Smolár, the vulnerabilities, assigned as CVE-2021-3970, CVE-2021-3971, and CVE-2021-3972, could be exploited to “deploy and successfully execute UEFI malware either in the form of SPI flash implants like LoJax or ESP implants like ESPecter” in the Lenovo Notebook BIOS.
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Source: ZDNet