An issue was discovered in shadow 4.5. newgidmap (in shadow-utils) is setuid and allows an unprivileged user to be placed in a user namespace where setgroups(2) is permitted. This allows an attacker to remove themselves from a supplementary group, which may allow access to certain filesystem paths if the administrator has used "group blacklisting" (e.g., chmod g-rwx) to restrict access to paths. This flaw effectively reverts a security feature in the kernel (in particular, the /proc/self/setgroups knob) to prevent this sort of privilege escalation.
結論預警: CVE-2018-7169 綜合評估為高可利用風險（63.1/100）：CVSS 技術影響為中級，利用機率（EPSS 1.62%） 核心證據: 已收錄 1 筆公開利用參考（Exploit-DB）。 近一日 EPSS 上升 +1.44%，被利用關注度持續升高。 強制指令: 存在公開利用—請盤點暴露面、落實緩解措施並優先修補。
風險隨態勢動態變化；本站持續評估並同步更新本頁展示內容。
| EDB-ID | 來源 | 類型 | 公開時間 | 連結 |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS 日更估計相對被利用可能性；百分位表示該 CVE 在已評分漏洞中的相對排名（越高表示相對更嚴重）。
| # | 日期 | 舊 EPSS 分數 | 新 EPSS 分數 | 變化（新 − 舊） |
|---|---|---|---|---|
| 1 | 2026-06-15 | 0.18% | 1.62% | +1.44% |
| 2 | 2025-07-03 | 0.29% | 0.18% | -0.11% |
| 3 | 2025-03-30 | — | 0.29% | — |
完整 EPSS 歷史 （共 8 筆）
該 CVE 的 CVSS 指標。
| 底座分 | 版本 | 嚴重度 | 向量 | 可利用性 | 影響 | 分數來源 |
|---|---|---|---|---|---|---|
| 5.3 | 3.0 | MEDIUM |
|
3.9 | 1.4 | [email protected] |
| 5.0 | 2.0 | MEDIUM |
|
10.0 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
medium | CVE-2018-7169: 1 source package rows (shadow); 2 state rows across 2 repos (3.22-community, edge-community); fixed 0, open 2. | https://security.alpinelinux.org/vuln/CVE-2018-7169 |
debian
|
low | CVE-2018-7169 low priority: Debian including 1 source packages (shadow), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2018-7169 |
gentoo
|
normal | CVE-2018-7169: 1 GLSA(s) (201805-09), 1 atom(s) (sys-apps/shadow); latest impact normal. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2018-7169 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2018-7169 |
suse
|
medium | CVE-2018-7169 severity moderate: SUSE including 276 source package names (0.9.1:shadow-4.2.1-27.6.1, 1.0.0:shadow-4.2.1-27.6.1, …), 317 product×package rows across 64 product lines (Container caasp/v4/default-http-backend, Container caasp/v4/dnsmasq-nanny, … (64 product lines)): Known Affected 157, Fixed 146, Known Not Affected 14. | https://www.suse.com/security/cve/CVE-2018-7169/ |
ubuntu
|
low | CVE-2018-7169 low priority: Ubuntu including 1 source packages (shadow), 13 status rows across 13 suites (artful, bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, trusty, upstream, xenial): not-affected 5, ignored 4, released 4. | https://ubuntu.com/security/CVE-2018-7169 |
| 廠商 | 產品 | 版本 | 原始 CPE |
|---|---|---|---|
| shadow_project | shadow | 4.5 | cpe:2.3:a:shadow_project:shadow:4.5:*:*:*:*:*:*:* |
| URL | 標籤 |
|---|---|
| https://bugs.launchpad.net/ubuntu/+source/shadow/+bug/1729357 | Exploit Issue Tracking Third Party Advisory |
| https://security.gentoo.org/glsa/201805-09 | Third Party Advisory |