Buffer overflow in GNU Grub2
CVE-2024-45777
A flaw was found in grub2. The calculation of the translation buffer when reading a language .mo file in grub_gettext_getstr_from_position() may overflow, leading to a Out-of-bound write. This issue can be leveraged by an attacker to overwrite grub2's sensitive heap data, eventually leading to the circumvention of secure boot protections.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.002 (14.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 14th percentile — 14.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- GNU Grub2
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 7
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9 — versions 1:2.06-114.el9_7
- Red Hat In-Vehicle Operating System 1
- Red Hat Openshift Container Platform 4
- Red Hat Enterprise Linux — versions 7.0, 8.0, 9.0
- Red Hat Openshift — versions 4.0
Weakness classification (CWE)
References
- access.redhat.com/errata/RHSA-2025:20532 (vendor-advisory)
- access.redhat.com/security/cve/CVE-2024-45777 (Third Party Advisory, vdb-entry)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2024-45777?
- CVE-2024-45777 is a medium-severity vulnerability in GNU Grub2, classified under Out-of-bounds Write. CVSS score: 6.7/10. Published 2025-02-19.
- How severe is CVE-2024-45777?
- Medium severity. CVSS v3 base score is 6.7 out of 10.