Security readout for executives and security teams
Plain-English summary
CVE-2024-45778 is a grub2 BFS filesystem parser flaw that can crash the bootloader when it reads a specially crafted BFS filesystem. The documented impact is denial of service, not data theft or code execution. The supplied Red Hat product entries are marked unaffected.
Executive priority
Handle through normal vulnerability management unless your environment uses custom grub2 builds or accepts untrusted boot media. The available evidence points to constrained denial-of-service risk, with no confirmed exploitation and Red Hat-listed platforms marked unaffected.
Technical view
The issue is described as an integer overflow and stack overflow condition in grub2 fs/bfs parsing. A crafted BFS filesystem may trigger an uncontrolled loop and crash grub2. CVSS 3.1 is 4.1, with local attack vector, high attack complexity, high privileges required, and availability impact only.
Likely exposure
Exposure appears limited to grub2 environments that can be made to parse a crafted BFS filesystem. The provided Red Hat records list RHEL 7, 8, 9, 10 and OpenShift Container Platform 4/RHCOS as unaffected. No other affected vendor build is identified in the bundle.
Exploitation context
The bundle does not show CISA KEV listing or cited active exploitation. The CVSS vector indicates local access, high privileges, and high complexity are required. Treat this primarily as a bootloader availability risk unless vendor-specific evidence says otherwise.
Researcher notes
Evidence is incomplete for non-Red Hat distributions or custom grub2 builds. The source bundle names the bug class and crash behavior but does not provide a universal affected-version range or specific remediation. Avoid assuming exploitability beyond the local, privileged, high-complexity CVSS context.
Mitigation direction
- Check your OS or appliance vendor advisory for grub2 package status.
- Confirm whether your deployed grub2 build includes the BFS parser exposure.
- Limit administrative access to boot media and bootloader configuration.
- Keep bootloader packages on vendor-supported update channels.
- For Red Hat-listed products, verify the vendor status remains unaffected.
Validation and detection
- Inventory systems and images that use grub2.
- Compare installed grub2 packages against vendor advisories for CVE-2024-45778.
- Review whether BFS filesystem parsing is present or relevant in your builds.
- Check bootloader update history for vendor security fixes.
- Document any custom grub2 builds for separate vendor or maintainer review.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-190: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupContainer behavior lookup
The affected technology mentions containers, so container-specific ATT&CK technique review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2024-45778 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Medium
- CVSS
- 4.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
SSVC decision data
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H0.53.6redhatVulnerability scoring details
Base CVSS 3.1 score
4.1MediumVector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:N/A:H
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- Source timelineredhat
Reported to Red Hat.
- Source timelineredhat
Made public.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://access.redhat.com/security/cve/CVE-2024-45778CVE reference, redhat · vdb-entry, x_refsource_REDHAT
- RHBZ#2345640CVE reference, redhat · issue-tracking, x_refsource_REDHAT
- https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.htmlCVE reference, redhat
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Integer Overflow or Wraparound
Integer Overflow or Wraparound represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.