It was found that polkit could be tricked into bypassing the credential checks for D-Bus requests, elevating the privileges of the requestor to the root user. This flaw could be used by an unprivileged local attacker to, for example, create a new local administrator. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.
総合評価: CVE-2021-3560 は在野悪用が確認された重大脅威(95.3/100)。CVSS 深刻度は高。悪用される可能性が高い(EPSS 22.19%、97 パーセンタイル) 根拠: CISA KEV に登録(追加日 2023-05-12)。Red Hat / Polkit が対象で、弱点分類 CWE-754の悪用が確認されています。未認証でリモート管理権限を奪取されるリスクが極めて高い。 直近 1 日で EPSS が +11.79% 上昇。悪用への関心が高まっている可能性があります。 推奨対応: CISA の対応期限を過ぎています。緊急のパッチ適用を最優先に検討してください。
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。
: Red Hat Polkit Incorrect Authorization Vulnerability · CISA KEV の詳細
: 2023-05-12
: 2023-06-02
: Apply updates per vendor instructions.
| EDB-ID | ソース | 種別 | 公開 | リンク |
|---|---|---|---|---|
| 50011 | exploit_db | edb | 2021-06-15 | Exploit-DB ↗ |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
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 | 10.41% | 22.19% | +11.79% |
| 2 | 2026-06-11 | 9.10% | 10.41% | +1.31% |
| 3 | 2026-06-01 | — | 9.10% | — |
EPSS の全履歴 (全 71 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 |
|---|---|---|---|---|---|---|
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | [email protected] |
| 7.8 | 3.1 | HIGH |
|
1.8 | 5.9 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| 7.2 | 2.0 | HIGH |
|
3.9 | 10.0 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
alpine
|
— | CVE-2021-3560: 1 source package rows (polkit); 8 state rows across 8 repos (3.12-main, 3.17-community, 3.18-community, 3.19-community, 3.20-community, 3.21-community, 3.22-community, edge-community); fixed 7, open 1. | https://security.alpinelinux.org/vuln/CVE-2021-3560 |
debian
|
not yet assigned | CVE-2021-3560 not yet assigned priority: Debian including 1 source packages (policykit-1), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2021-3560 |
gentoo
|
high | CVE-2021-3560: 1 GLSA(s) (202107-31), 1 atom(s) (sys-auth/polkit); latest impact high. | https://bugs.gentoo.org/buglist.cgi?quicksearch=CVE-2021-3560 |
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2021-3560 |
suse
|
high | CVE-2021-3560 severity important: SUSE including 293 source package names (PolicyKit, amazon/suse-sles-15-sp1-chost-byos-v20210304-hvm-ssd-x86_64, …), 702 product×package rows across 197 product lines (Container rancher/elemental-teal-rt/5.3, Container rancher/elemental-teal-rt/5.4, … (197 product lines)): Fixed 467, Known Affected 231, Known Not Affected 4. | https://www.suse.com/security/cve/CVE-2021-3560/ |
ubuntu
|
high | CVE-2021-3560 high priority: Ubuntu including 1 source packages (policykit-1), 9 status rows across 9 suites (bionic, focal, groovy, hirsute, impish, jammy, trusty, upstream, xenial): released 5, not-affected 3, needs-triage 1. | https://ubuntu.com/security/CVE-2021-3560 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| polkit_project | polkit | < 0.119 | cpe:2.3:a:polkit_project:polkit:*:*:*:*:*:*:*:* |
| debian | debian_linux | 11.0 | cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:* |
| canonical | ubuntu_linux | 20.04 | cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:*:*:*:* |
| redhat | virtualization | 4.0 | cpe:2.3:a:redhat:virtualization:4.0:*:*:*:*:*:*:* |
| redhat | virtualization_host | 4.0 | cpe:2.3:a:redhat:virtualization_host:4.0:*:*:*:*:*:*:* |
| redhat | openshift_container_platform | 4.7 | cpe:2.3:a:redhat:openshift_container_platform:4.7:*:*:*:*:*:*:* |
| URL | タグ |
|---|---|
| http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.html | Third Party Advisory VDB Entry |
| http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.html | Third Party Advisory VDB Entry |
| https://bugzilla.redhat.com/show_bug.cgi?id=1961710 | Issue Tracking Patch Vendor Advisory |
| https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/ | Exploit Third Party Advisory |
| https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3560 | US Government Resource |