CVE-2020-8341
https://notcve.org/view.php?id=CVE-2020-8341
In Lenovo systems, SMM BIOS Write Protection is used to prevent writes to SPI Flash. While this provides sufficient protection, an additional layer of protection is provided by SPI Protected Range Registers (PRx). After resuming from S3 sleep mode in various versions of BIOS for some Lenovo ThinkPad systems, the PRx is not set. This does not impact the SMM BIOS Write Protection, which keeps systems protected. En los sistemas Lenovo, SMM BIOS Write Protection es usada para impedir escrituras en la SPI Flash. • https://support.lenovo.com/us/en/product_security/LEN-30042 •
CVE-2020-8335
https://notcve.org/view.php?id=CVE-2020-8335
The BIOS tamper detection mechanism was not triggered in Lenovo ThinkPad A285, BIOS versions up to r0xuj70w; A485, BIOS versions up to r0wuj65w; T495 BIOS versions up to r12uj55w; T495s/X395, BIOS versions up to r13uj47w, while the emergency-reset button is pressed which may allow for unauthorized access. El mecanismo de detección de alteraciones del BIOS no fue activado en Lenovo ThinkPad A285, versiones de BIOS hasta r0xuj70w; A485, versiones de BIOS hasta r0wuj65w; T495 versiones de BIOS hasta r12uj55w; T495s/X395 versiones de BIOS hasta r13uj47w, mientras es presionado el botón de reinicio de emergencia que puede permitir un acceso no autorizado • https://support.lenovo.com/us/en/product_security/LEN-30042 •
CVE-2020-8334
https://notcve.org/view.php?id=CVE-2020-8334
The BIOS tamper detection mechanism was not triggered in Lenovo ThinkPad T495s, X395, T495, A485, A285, A475, A275 which may allow for unauthorized access. El mecanismo de detección de manipulación del BIOS no se activó en Lenovo ThinkPad T495s, X395, T495, A485, A285, A475, A275, lo que puede permitir un acceso no autorizado • https://support.lenovo.com/us/en/product_security/LEN-30042 • CWE-754: Improper Check for Unusual or Exceptional Conditions •
CVE-2020-8323
https://notcve.org/view.php?id=CVE-2020-8323
A potential vulnerability in the SMI callback function used in the Legacy SD driver in some Lenovo ThinkPad, ThinkStation, and Lenovo Notebook models may allow arbitrary code execution. Una potencial vulnerabilidad en la función de devolución de llamada SMI usada en el controlador Legacy SD en algunos modelos Lenovo ThinkPad, ThinkStation y Lenovo Notebook, lo que puede permitir una ejecución de código arbitraria • https://support.lenovo.com/us/en/product_security/LEN-30042 •
CVE-2020-8320
https://notcve.org/view.php?id=CVE-2020-8320
An internal shell was included in BIOS image in some ThinkPad models that could allow escalation of privilege. Un shell interno fue incluido en la imagen del BIOS en algunos modelos de ThinkPad que podría permitir una escalada de privilegios • https://support.lenovo.com/us/en/product_security/LEN-30042 • CWE-269: Improper Privilege Management CWE-489: Active Debug Code •