GHSA-5mcr-gq6c-3hq2 · 深刻度： medium · エコシステム： maven — Local Information Disclosure Vulnerability in Netty on Unix-Like systems
Netty is an open-source, asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers & clients. In Netty before version 4.1.59.Final there is a vulnerability on Unix-like systems involving an insecure temp file. When netty's multipart decoders are used local information disclosure can occur via the local system temporary directory if temporary storing uploads on the disk is enabled. On unix-like systems, the temporary directory is shared between all user. As such, writing to this directory using APIs that do not explicitly set the file/directory permissions can lead to information disclosure. Of note, this does not impact modern MacOS Operating Systems. The method "File.createTempFile" on unix-like systems creates a random file, but, by default will create this file with the permissions "-rw-r--r--". Thus, if sensitive information is written to this file, other local users can read this information. This is the case in netty's "AbstractDiskHttpData" is vulnerable. This has been fixed in version 4.1.59.Final. As a workaround, one may specify your own "java.io.tmpdir" when you start the JVM or use "DefaultHttpDataFactory.setBaseDir(...)" to set the directory to something that is only readable by the current user.
総合評価: CVE-2021-21290 は悪用リスクが高い（67.9/100）。CVSS 深刻度は中。悪用される可能性が高い（EPSS 1.78%、75 パーセンタイル） 根拠: 公開エクスプロイトが 1 件参照されています（Exploit-DB）。 直近 1 日で EPSS が +1.75% 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: 公開エクスプロイトが確認されています。影響範囲の確認、緩和策の適用、パッチ適用を優先してください。
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。
| EDB-ID | ソース | 種別 | 公開 | リンク |
|---|---|---|---|---|
| — | 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 | 0.02% | 1.78% | +1.75% |
| 2 | 2025-11-21 | 0.07% | 0.02% | -0.05% |
| 3 | 2025-11-18 | — | 0.07% | — |
EPSS の全履歴 （全 15 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 |
|---|---|---|---|---|---|---|
| 6.2 | 3.1 | MEDIUM |
|
2.5 | 3.6 | [email protected] |
| 5.5 | 3.1 | MEDIUM |
|
1.8 | 3.6 | [email protected] |
| 1.9 | 2.0 | LOW |
|
3.4 | 2.9 | [email protected] |
GHSA-5mcr-gq6c-3hq2 · 深刻度： medium · エコシステム： maven — Local Information Disclosure Vulnerability in Netty on Unix-Like systems
| vendor | priority | summary | link |
|---|---|---|---|
debian
|
not yet assigned | CVE-2021-21290 not yet assigned priority: Debian including 1 source packages (netty), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5. | https://security-tracker.debian.org/tracker/CVE-2021-21290 |
redhat
|
medium | — | https://access.redhat.com/security/cve/CVE-2021-21290 |
suse
|
medium | CVE-2021-21290 severity moderate: SUSE including 242 source package names (5.0.0-beta1.2.122:netty-4.1.75-150200.4.6.2, 5.1.0.6.40:netty-4.1.75-150200.4.6.2, …), 262 product×package rows across 28 product lines (Container suse/manager/5.0/x86_64/server, Container suse/multi-linux-manager/5.1/x86_64/server, … (28 product lines)): Known Affected 231, Fixed 31. | https://www.suse.com/security/cve/CVE-2021-21290/ |
ubuntu
|
medium | CVE-2021-21290 medium priority: Ubuntu including 1 source packages (netty), 16 status rows across 16 suites (bionic, focal, groovy, hirsute, impish, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): released 11, ignored 4, needs-triage 1. | https://ubuntu.com/security/CVE-2021-21290 |
| ベンダー | 製品 | バージョン | 生の CPE |
|---|---|---|---|
| netty | netty | < 4.1.59 | cpe:2.3:a:netty:netty:*:*:*:*:*:*:*:* |
| debian | debian_linux | 9.0 | cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:* |
| debian | debian_linux | 10.0 | cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:* |
| quarkus | quarkus | <= 1.13.7 | cpe:2.3:a:quarkus:quarkus:*:*:*:*:*:*:*:* |
| oracle | banking_corporate_lending_process_management | 14.2.0 | cpe:2.3:a:oracle:banking_corporate_lending_process_management:14.2.0:*:*:*:*:*:*:* |
| oracle | banking_corporate_lending_process_management | 14.3.0 | cpe:2.3:a:oracle:banking_corporate_lending_process_management:14.3.0:*:*:*:*:*:*:* |
| oracle | banking_corporate_lending_process_management | 14.5.0 | cpe:2.3:a:oracle:banking_corporate_lending_process_management:14.5.0:*:*:*:*:*:*:* |
| oracle | banking_credit_facilities_process_management | 14.2.0 | cpe:2.3:a:oracle:banking_credit_facilities_process_management:14.2.0:*:*:*:*:*:*:* |
| oracle | banking_credit_facilities_process_management | 14.3.0 | cpe:2.3:a:oracle:banking_credit_facilities_process_management:14.3.0:*:*:*:*:*:*:* |
| oracle | banking_credit_facilities_process_management | 14.5.0 | cpe:2.3:a:oracle:banking_credit_facilities_process_management:14.5.0:*:*:*:*:*:*:* |
| oracle | banking_trade_finance_process_management | 14.2.0 | cpe:2.3:a:oracle:banking_trade_finance_process_management:14.2.0:*:*:*:*:*:*:* |
| oracle | banking_trade_finance_process_management | 14.3.0 | cpe:2.3:a:oracle:banking_trade_finance_process_management:14.3.0:*:*:*:*:*:*:* |
| oracle | banking_trade_finance_process_management | 14.5.0 | cpe:2.3:a:oracle:banking_trade_finance_process_management:14.5.0:*:*:*:*:*:*:* |
| oracle | communications_brm_-_elastic_charging_engine | 12.0.0.3 | cpe:2.3:a:oracle:communications_brm_-_elastic_charging_engine:12.0.0.3:*:*:*:*:*:*:* |
| oracle | communications_design_studio | 7.4.2 | cpe:2.3:a:oracle:communications_design_studio:7.4.2:*:*:*:*:*:*:* |
| oracle | communications_messaging_server | 8.1 | cpe:2.3:a:oracle:communications_messaging_server:8.1:*:*:*:*:*:*:* |
| oracle | nosql_database | < 20.3 | cpe:2.3:a:oracle:nosql_database:*:*:*:*:*:*:*:* |
| netapp | active_iq_unified_manager | — | cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:linux:*:* |
| netapp | active_iq_unified_manager | — | cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:windows:*:* |
| netapp | cloud_secure_agent | — | cpe:2.3:a:netapp:cloud_secure_agent:-:*:*:*:*:*:*:* |
| netapp | snapcenter | — | cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:* |