GHSA-j4rf-7357-f4cg · 深刻度： high · エコシステム： go — Unpatched extfs vulnerabilities are exploitable through suid-mode Apptainer
Apptainer is an open source container platform for Linux. There is an ext4 use-after-free flaw that is exploitable through versions of Apptainer < 1.1.0 and installations that include apptainer-suid < 1.1.8 on older operating systems where that CVE has not been patched. That includes Red Hat Enterprise Linux 7, Debian 10 buster (unless the linux-5.10 package is installed), Ubuntu 18.04 bionic and Ubuntu 20.04 focal. Use-after-free flaws in the kernel can be used to attack the kernel for denial of service and potentially for privilege escalation. Apptainer 1.1.8 includes a patch that by default disables mounting of extfs filesystem types in setuid-root mode, while continuing to allow mounting of extfs filesystems in non-setuid "rootless" mode using fuse2fs. Some workarounds are possible. Either do not install apptainer-suid (for versions 1.1.0 through 1.1.7) or set `allow setuid = no` in apptainer.conf. This requires having unprivileged user namespaces enabled and except for apptainer 1.1.x versions will disallow mounting of sif files, extfs files, and squashfs files in addition to other, less significant impacts. (Encrypted sif files are also not supported unprivileged in apptainer 1.1.x.). Alternatively, use the `limit containers` options in apptainer.conf/singularity.conf to limit sif files to trusted users, groups, and/or paths, and set `allow container extfs = no` to disallow mounting of extfs overlay files. The latter option by itself does not disallow mounting of extfs overlay partitions inside SIF files, so that's why the former options are also needed.
総合評価: CVE-2023-30549 は低リスク（38.7/100）。CVSS 深刻度は高。悪用される可能性が高い（EPSS 0.37%、28 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 | 0.03% | 0.37% | +0.34% |
| 2 | 2025-11-21 | 0.17% | 0.03% | -0.15% |
| 3 | 2025-11-18 | — | 0.17% | — |
EPSS の全履歴 （全 8 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 |
|---|---|---|---|---|---|---|
| 7.1 | 3.1 | HIGH |
|
2.5 | 4.0 | [email protected] |
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
GHSA-j4rf-7357-f4cg · 深刻度： high · エコシステム： go — Unpatched extfs vulnerabilities are exploitable through suid-mode Apptainer
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
high | CVE-2023-30549: 1 source package rows (apptainer); 9 state rows across 5 repos (3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 5, open 4. | https://security.alpinelinux.org/vuln/CVE-2023-30549 |
debian
|
unimportant | CVE-2023-30549 unimportant priority: Debian including 1 source packages (singularity-container), 1 status rows across 1 suites (sid): resolved 1. | https://security-tracker.debian.org/tracker/CVE-2023-30549 |
gentoo
|
high | CVE-2023-30549: 1 GLSA(s) (202311-13), 1 atom(s) (app-containers/apptainer); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2023-30549 |
ubuntu
|
medium | CVE-2023-30549 medium priority: Ubuntu including 1 source packages (singularity-container), 13 status rows across 13 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 5, ignored 4, needs-triage 4. | https://ubuntu.com/security/CVE-2023-30549 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| lfprojects | apptainer | < 1.1.8 | cpe:2.3:a:lfprojects:apptainer:*:*:*:*:*:go:*:* |
| sylabs | singularity | — | cpe:2.3:a:sylabs:singularity:*:*:*:*:*:*:*:* |
| redhat | enterprise_linux | 7.0 | cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* |