Debian: Security Advisory for grub2 (DSA-4867-1)

The remote host is missing an update for the 'grub2' package(s) announced via the DSA-4867-1 advisory.

Several vulnerabilities have been discovered in the GRUB2 bootloader. CVE-2020-14372 It was discovered that the acpi command allows a privileged user to load crafted ACPI tables when Secure Boot is enabled. CVE-2020-25632 A use-after-free vulnerability was found in the rmmod command. CVE-2020-25647 An out-of-bound write vulnerability was found in the grub_usb_device_initialize() function, which is called to handle USB device initialization. CVE-2020-27749 A stack buffer overflow flaw was found in grub_parser_split_cmdline. CVE-2020-27779 It was discovered that the cutmem command allows a privileged user to remove memory regions when Secure Boot is enabled. CVE-2021-20225 A heap out-of-bounds write vulnerability was found in the short form option parser. CVE-2021-20233 A heap out-of-bound write flaw was found caused by mis-calculation of space required for quoting in the menu rendering. Further detailed information can be found at [link moved to references]

'grub2' package(s) on Debian Linux.

Checks if a vulnerable package version is present on the target host.

For the stable distribution (buster), these problems have been fixed in version 2.02+dfsg1-20+deb10u4. We recommend that you upgrade your grub2 packages.