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𝓢𝓮𝓮𝓙𝓪𝔂𝓔𝓶𝓶 to [email protected] • 1 year ago

Critical vulnerability affecting most Linux distros allows for bootkits

arstechnica.com

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Critical vulnerability affecting most Linux distros allows for bootkits

arstechnica.com

𝓢𝓮𝓮𝓙𝓪𝔂𝓔𝓶𝓶 to [email protected] • 1 year ago
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Buffer overflow in bootloader shim allows attackers to run code each time devices boot up.
  • @[email protected]
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    1 year ago

    I wonder if Matt calculated CVSS score before calling this vulnerability “critical”.

    • folkrav
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      1 year ago

      It’s the last sentence of the article - 9.8/10. In this case it’s probably called critical because of the potential consequences of the exploit being a full machine takeover, not the likeliness of the exploit being used.

      • @[email protected]
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        4•1 year ago

        It means that CVSS is calculated wrong. It can’t be so big because default configuration is not affected and attacker requires admin access to change it.

        • @[email protected]
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          3•1 year ago

          Admin or physical access.

        • folkrav
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          3•1 year ago

          I mean take a look at the report. Still not sure how it’s “wrong”.

          https://nvd.nist.gov/vuln-metrics/cvss/v3-calculator?name=CVE-2023-40547&vector=AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H&version=3.1&source=NIST

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From Wikipedia, the free encyclopedia

Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word “Linux” in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

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