A flaw was found in grub2. When reading tar files, grub2 allocates an internal buffer for the file name. However, it fails to properly verify the allocation against possible integer overflows. It's possible to cause the allocation length to overflow with a crafted tar file, leading to a heap out-of-bounds write. This flaw eventually allows an attacker to circumvent secure boot protections.
総合評価: CVE-2024-45780 は低リスク(33.1/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 0.26%、17 パーセンタイル) 推奨対応: 悪用情報と EPSS の推移を監視し、必要に応じて優先度を見直してください。
リスクは変動します。再評価に基づき、本ページの表示内容を更新しています。
EPSS は日次で悪用されやすさの相対度合いを推定します。パーセンタイルは採点済み CVE の中での相対位置(高いほど相対的に深刻)を示します。
| # | 日付 | 旧 EPSS スコア | 新 EPSS スコア | Δ(新 − 旧) |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.02% | 0.26% | +0.24% |
| 2 | 2026-03-30 | 0.08% | 0.02% | -0.06% |
| 3 | 2026-03-29 | — | 0.08% | — |
EPSS の全履歴 (全 4 件)
この CVE の CVSS 指標。
| ベーススコア | バージョン | 深刻度 | ベクトル | 悪用しやすさ | 影響 | スコアの出典 |
|---|---|---|---|---|---|---|
| 6.7 | 3.1 | MEDIUM |
|
0.8 | 5.9 | [email protected] |
| 6.7 | 3.1 | MEDIUM |
|
0.8 | 5.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2024-45780 not yet assigned priority: Debian including 1 source packages (grub2), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2024-45780 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2024-45780 |
suse
|
medium | CVE-2024-45780 severity moderate: SUSE including 376 source package names (2.0.4-5.8.146:grub2-2.06-150500.29.43.2, 2.0.4-5.8.146:grub2-i386-pc-2.06-150500.29.43.2, …), 1407 product×package rows across 291 product lines (Container suse/manager/5.0/x86_64/server, Container suse/sl-micro/6.0/base-os-container, … (291 product lines)): Fixed 1186, Known Affected 221. | https://www.suse.com/security/cve/CVE-2024-45780/ |
ubuntu
|
medium | CVE-2024-45780 medium priority: Ubuntu including 3 source packages (grub2, grub2-signed, grub2-unsigned), 29 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): needs-triage 15, not-affected 8, ignored 6. | https://ubuntu.com/security/CVE-2024-45780 |
| URL | タグ |
|---|---|
| https://access.redhat.com/security/cve/CVE-2024-45780 | Third Party Advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=2345856 | Issue Tracking |
| https://lists.gnu.org/archive/html/grub-devel/2025-02/msg00024.html | Mailing List |