lxc-user-nic in lxc through 5.0.1 is installed setuid root, and may allow local users to infer whether any file exists, even within a protected directory tree, because "Failed to open" often indicates that a file does not exist, whereas "does not refer to a network namespace path" often indicates that a file exists. NOTE: this is different from CVE-2018-6556 because the CVE-2018-6556 fix design was based on the premise that "we will report back to the user that the open() failed but the user has no way of knowing why it failed"; however, in many realistic cases, there are no plausible reasons for failing except that the file does not exist.
総合評価: CVE-2022-47952 は低リスク(28.2/100)。CVSS 深刻度は低。悪用される可能性が高い(EPSS 0.70%、48 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 | 2.62% | 0.70% | -1.92% |
| 2 | 2026-06-10 | 2.32% | 2.62% | +0.30% |
| 3 | 2026-05-22 | — | 2.32% | — |
EPSS の全履歴 (全 28 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 |
|---|---|---|---|---|---|---|
| 3.3 | 3.1 | LOW |
|
1.8 | 1.4 | [email protected] |
| 3.3 | 3.1 | LOW |
|
1.8 | 1.4 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
low | CVE-2022-47952: 1 source package rows (lxc); 17 state rows across 7 repos (3.17-main, 3.18-main, 3.19-main, 3.20-main, 3.21-main, 3.22-main, edge-main); fixed 7, open 10. | https://security.alpinelinux.org/vuln/CVE-2022-47952 |
debian
|
not yet assigned | CVE-2022-47952 not yet assigned priority: Debian including 1 source packages (lxc), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2022-47952 |
suse
|
medium | CVE-2022-47952 severity moderate: SUSE including 22 source package names (liblxc-devel-5.0.2-1.1, liblxc-devel-6.0.2-bp155.4.3.1, …), 36 product×package rows across 6 product lines (SUSE Linux Enterprise Server 11 SP3 for Teradata, SUSE Package Hub 15 SP5, … (6 product lines)): Fixed 35, Known Not Affected 1. | https://www.suse.com/security/cve/CVE-2022-47952/ |
ubuntu
|
low | CVE-2022-47952 low priority: Ubuntu including 1 source packages (lxc), 13 status rows across 13 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): needed 6, ignored 3, not-affected 3, released 1. | https://ubuntu.com/security/CVE-2022-47952 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| linuxcontainers | lxc | <= 5.0.1 | cpe:2.3:a:linuxcontainers:lxc:*:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1783591/comments/45 | Issue Tracking Vendor Advisory |
| https://github.com/MaherAzzouzi/CVE-2022-47952 | Third Party Advisory |
| https://github.com/lxc/lxc/blob/0b83d71c2c8f3bac9503f894cd84584f79258bb3/lxc.spec.in#L274 | Third Party Advisory |
| https://github.com/lxc/lxc/blob/0b83d71c2c8f3bac9503f894cd84584f79258bb3/src/lxc/cmd/lxc_user_nic.c#L1085-L1104 | Third Party Advisory |
| https://lists.debian.org/debian-lts-announce/2023/08/msg00025.html |