CVE-2024-1048

Grub2: grub2-set-bootflag can be abused by local (pseudo-)users

Description

A flaw was found in the grub2-set-bootflag utility of grub2. After the fix of CVE-2019-14865, grub2-set-bootflag will create a temporary file with the new grubenv content and rename it to the original grubenv file. If the program is killed before the rename operation, the temporary file will not be removed and may fill the filesystem when invoked multiple times, resulting in a filesystem out of free inodes or blocks.

Category

3.3
CVSS
Severity: Low
CVSS 3.1 •
EPSS 0.01%
Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com
Affected: Red Hat Red Hat Enterprise Linux 8
Affected: Red Hat Red Hat Enterprise Linux 9
Affected: Red Hat Red Hat Enterprise Linux 6
Affected: Red Hat Red Hat Enterprise Linux 7
Published at:
Updated at:

References

Link Tags
https://access.redhat.com/errata/RHSA-2024:2456 vendor advisory
https://access.redhat.com/errata/RHSA-2024:3184 vendor advisory
https://access.redhat.com/security/cve/CVE-2024-1048 vdb entry vendor advisory
https://bugzilla.redhat.com/show_bug.cgi?id=2256827 vendor advisory issue tracking
https://www.openwall.com/lists/oss-security/2024/02/06/3 third party advisory mailing list
http://www.openwall.com/lists/oss-security/2024/02/06/3
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XRZQCVZ3XOASVFT6XLO7F2ZXOLOHIJZQ/
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YSJAEGRR3XHMBBBKYOVMII4P34IXEYPE/
https://security.netapp.com/advisory/ntap-20240223-0007/

Frequently Asked Questions

What is the severity of CVE-2024-1048?
CVE-2024-1048 has been scored as a low severity vulnerability.
How to fix CVE-2024-1048?
To fix CVE-2024-1048, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-1048 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2024-1048 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-1048?
CVE-2024-1048 affects Red Hat Red Hat Enterprise Linux 8, Red Hat Red Hat Enterprise Linux 9, Red Hat Red Hat Enterprise Linux 6, Red Hat Red Hat Enterprise Linux 7.
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