CWE
377
Advisory Published
Updated

CVE-2021-46705: grub2-once uses fixed file name in /var/tmp

First published: Wed Feb 23 2022(Updated: )

A Insecure Temporary File vulnerability in grub-once of grub2 in SUSE Linux Enterprise Server 15 SP4, openSUSE Factory allows local attackers to truncate arbitrary files. This issue affects: SUSE Linux Enterprise Server 15 SP4 grub2 versions prior to 2.06-150400.7.1. SUSE openSUSE Factory grub2 versions prior to 2.06-18.1.

Credit: meissner@suse.de

Affected SoftwareAffected VersionHow to fix
Gnu Grub2<2.06-150400.7.1
SUSE Linux Enterprise Server=15-sp4
Gnu Grub2<2.06-18.1
openSUSE Factory

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Frequently Asked Questions

  • What is the vulnerability ID for this issue?

    The vulnerability ID for this issue is CVE-2021-46705.

  • What is the title of the vulnerability?

    The title of the vulnerability is 'A Insecure Temporary File vulnerability in grub-once of grub2 in SUSE Linux Enterprise Server 15 SP4'.

  • What is the affected software?

    The affected software includes SUSE Linux Enterprise Server 15 SP4 with grub2 versions prior to 2.06-150400.7.1, and openSUSE Factory with grub2 versions prior to 2.06-18.1.

  • What is the severity of CVE-2021-46705?

    The severity of CVE-2021-46705 is medium with a CVSS score of 4.4.

  • How can I fix this vulnerability?

    To fix this vulnerability, update SUSE Linux Enterprise Server 15 SP4 to grub2 version 2.06-150400.7.1 or later, and update openSUSE Factory to grub2 version 2.06-18.1 or later.

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