The signature verification routine in install.sh in yarnpkg/website through 2018-06-05 only verifies that the yarn release is signed by any (arbitrary) key in the local keyring of the user, and does not pin the signature to the yarn release key, which allows remote attackers to sign tampered yarn release packages with their own key.
総合評価: CVE-2018-12556 は中リスク(42.6/100)。CVSS 深刻度は中。悪用される可能性が高い(EPSS 0.34%、54 パーセンタイル) 推奨対応: 影響資産を整理し、修補計画に組み込んでください。
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 | 2025-03-17 | 0.37% | 0.34% | -0.03% |
| 2 | 2024-12-17 | 0.47% | 0.37% | -0.10% |
| 3 | 2024-11-15 | — | 0.47% | — |
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 |
|---|---|---|---|---|---|---|
| 5.9 | 3.0 | MEDIUM |
|
2.2 | 3.6 | [email protected] |
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| vendor | priority | summary | link |
|---|---|---|---|
ubuntu
|
medium | CVE-2018-12556 medium priority: Ubuntu including 1 source packages (node-yarnpkg), 19 status rows across 19 suites (bionic, cosmic, disco, eoan, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): ignored 10, needs-triage 5, DNE 4. | https://ubuntu.com/security/CVE-2018-12556 |
| URL | タグ |
|---|---|
| http://packetstormsecurity.com/files/152703/Johnny-You-Are-Fired.html | Third Party Advisory VDB Entry |
| http://seclists.org/fulldisclosure/2019/Apr/38 | Mailing List Third Party Advisory |
| https://github.com/RUB-NDS/Johnny-You-Are-Fired | Third Party Advisory |
| https://github.com/RUB-NDS/Johnny-You-Are-Fired/blob/master/paper/johnny-fired.pdf | Third Party Advisory |
| https://github.com/yarnpkg/website/commits/master | Third Party Advisory |
| https://www.openwall.com/lists/oss-security/2019/04/30/4 | Mailing List Third Party Advisory |