Vulnerability in java (CVE-2020-2830)
Summary
Vulnerability in java (CVE-2020-2830). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to 1.7.0, 1.8.0, 7.0.261, 8.0.251, 11.0.7, 14.0.1 or later.
Original description
The description as published by the source.
Vulnerability in the Java SE, Java SE Embedded product of Oracle Java SE (component: Concurrency). Supported versions that are affected are Java SE: 7u251, 8u241, 11.0.6 and 14; Java SE Embedded: 8u241. Easily exploitable vulnerability allows unauthenticated attacker with network access via multiple protocols to compromise Java SE, Java SE Embedded. Successful attacks of this vulnerability can result in unauthorized ability to cause a partial denial of service (partial DOS) of Java SE, Java SE Embedded. Note: Applies to client and server deployment of Java. This vulnerability can be exploited through sandboxed Java Web Start applications and sandboxed Java applets. It can also be exploited by supplying data to APIs in the specified Component without using sandboxed Java Web Start applications or sandboxed Java applets, such as through a web service. CVSS 3.0 Base Score 5.3 (Availability impacts). CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L).
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2020-2830 has been found in java.
Risk of unauthorized operations or information disclosure.
What to do: upgrade java to 1.7.0, 1.8.0, 7.0.261, 8.0.251, 11.0.7, 14.0.1 or later.
If unsure, ask your IT team or search "java CVE-2020-2830" on the vendor's site.
CVE-2020-2830 (java)
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: 1.7.0, 1.8.0, 7.0.261, 8.0.251, 11.0.7, 14.0.1 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (unclassified) exists in java.
Check the vendor advisory for the affected versions of java.
Severity: ?. Risk of unauthorized operations or information disclosure.
Update to 1.7.0, 1.8.0, 7.0.261, 8.0.251, 11.0.7, 14.0.1.
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'java' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
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1Identify exposure identify
grep -r 'java' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
javaを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply patch patch
Upgrade java to 1.7.0, 1.8.0, 7.0.261, 8.0.251, 11.0.7, 14.0.1ステージング環境で 1.7.0, 1.8.0, 7.0.261, 8.0.251, 11.0.7, 14.0.1 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
3Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2020-2830 openjdk-11 Fixed in: 11.0.7+10-1
References
- advisory lists.opensuse.org
- advisory lists.opensuse.org
- advisory lists.opensuse.org
- advisory kc.mcafee.com
- advisory lists.debian.org
- advisory security.gentoo.org
- advisory security.netapp.com
- advisory usn.ubuntu.com
- advisory debian.org
- advisory oracle.com
- web lists.fedoraproject.org
- web lists.fedoraproject.org
- web lists.fedoraproject.org
- web nvd.nist.gov