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CVE-2020-1935
Vulnerability in org.apache.tomcat.embed:tomcat-embed-core (CVE-2020-1935)
Summary
vulnerability in org.apache.tomcat.embed:tomcat-embed-core (CVE-2020-1935). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `9.0.31` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2020-1935** has been found in org.apache.tomcat.embed:tomcat-embed-core.
Risk of unauthorized operations or information disclosure. CVSS score: ?/10.
What to do: upgrade org.apache.tomcat.embed:tomcat-embed-core to **9.0.31** or later.
If unsure, ask your IT team or search "org.apache.tomcat.embed:tomcat-embed-core CVE-2020-1935" on the vendor's site.
CVE-2020-1935 (org.apache.tomcat.embed:tomcat-embed-core) — CWE-444 /
Attack vector: remote (network-reachable) / unauthenticated / no user interaction
Patched: `9.0.31` — 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.
❓ What is the problem
**A vulnerability** (CWE-444) exists in org.apache.tomcat.embed:tomcat-embed-core.
📍 Affected scope
org.apache.tomcat.embed:tomcat-embed-core — .
🔥 Severity
Severity: ?. Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **9.0.31**.
🛡️ Workaround
Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.
🔍 Detection
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run `grep -r 'org.apache.tomcat.embed:tomcat-embed-core' .` against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response Actions (7 steps)
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'org.apache.tomcat.embed:tomcat-embed-core' . | 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 `org.apache.tomcat.embed:tomcat-embed-core` を grep し、稼働しているサービス・バージョンを把握する。
-
6Apply patch patch
Upgrade org.apache.tomcat.embed:tomcat-embed-core to 9.0.31ステージング環境で 9.0.31 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と、Step 3 で見つけた異常検知の続報チェックを含めること。
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7Post-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 Step 3 と同じログクエリでアラート再発が無いか継続監視。
Affected packages
Maven
org.apache.tomcat.embed:tomcat-embed-core
[{"type":"ECOSYSTEM","events":[{"introduced":"9.0.0"},{"fixed":"9.0.31"}]}]
Maven
org.apache.tomcat:tomcat
[{"type":"ECOSYSTEM","events":[{"introduced":"9.0.0"},{"fixed":"9.0.31"}]}]
Bitnami
tomcat
[{"type":"SEMVER","events":[{"introduced":"7.0.0"},{"fixed":"7.0.100"},{"introduced":"8.5.0"},{"fixed":"8.5.51"},{"introduced":"9.0.0"},{"fixed":"9.0.31"}]}]
References
- advisory https://usn.ubuntu.com/4448-1/
- advisory https://security.netapp.com/advisory/ntap-20200327-0005/
- advisory https://nvd.nist.gov/vuln/detail/CVE-2020-1935
- web https://lists.apache.org/thread.html/r441c1f30a252bf14b07396286f6abd8089ce4240e91323211f1a2d75%40%3Cusers.tomcat.apache.org%3E
- web https://lists.apache.org/thread.html/r660cd379afe346f10d72c0eaa8459ccc95d83aff181671b7e9076919%40%3Cusers.tomcat.apache.org%3E
- web https://lists.apache.org/thread.html/r7bc994c965a34876bd94d5ff15b4e1e30b6220a15eb9b47c81915b78%40%3Ccommits.tomee.apache.org%3E
- web https://lists.apache.org/thread.html/rd547be0c9d821b4b1000a694b8e58ef9f5e2d66db03a31dfe77c4b18%40%3Cusers.tomcat.apache.org%3E
- web https://lists.apache.org/thread.html/r80e9c8417c77d52c62809168b96912bda70ddf7748f19f8210f745b1%40%3Cusers.tomcat.apache.org%3E
- web https://lists.apache.org/thread.html/r9ce7918faf347e7aac32be930bf26c233b0b140fe37af0bb294158b6%40%3Cdev.tomcat.apache.org%3E
- web https://lists.apache.org/thread.html/ra5dee390ad2d60307b8362505c059cd6a726de4d146d63dfce1e05e7%40%3Cusers.tomcat.apache.org%3E
- web https://lists.apache.org/thread.html/rc31cbabb46cdc58bbdd8519a8f64b6236b2635a3922bbeba0f0e3743%40%3Ccommits.tomee.apache.org%3E
- web https://lists.apache.org/thread.html/r127f76181aceffea2bd4711b03c595d0f115f63e020348fe925a916c%40%3Cannounce.tomcat.apache.org%3E
- web http://lists.opensuse.org/opensuse-security-announce/2020-03/msg00025.html
- web https://lists.debian.org/debian-lts-announce/2020/03/msg00006.html
- web https://lists.debian.org/debian-lts-announce/2020/05/msg00026.html
- web https://www.debian.org/security/2020/dsa-4680
- web https://www.oracle.com/security-alerts/cpujul2020.html
- web https://www.oracle.com/security-alerts/cpujan2021.html
- web https://www.oracle.com/security-alerts/cpuoct2020.html
- web https://www.debian.org/security/2020/dsa-4673
- web https://usn.ubuntu.com/4448-1
- web https://security.netapp.com/advisory/ntap-20200327-0005
- web https://lists.apache.org/thread.html/rd547be0c9d821b4b1000a694b8e58ef9f5e2d66db03a31dfe77c4b18@%3Cusers.tomcat.apache.org%3E
- web https://lists.apache.org/thread.html/rc31cbabb46cdc58bbdd8519a8f64b6236b2635a3922bbeba0f0e3743@%3Ccommits.tomee.apache.org%3E
- web https://lists.apache.org/thread.html/ra5dee390ad2d60307b8362505c059cd6a726de4d146d63dfce1e05e7@%3Cusers.tomcat.apache.org%3E
- web https://lists.apache.org/thread.html/r9ce7918faf347e7aac32be930bf26c233b0b140fe37af0bb294158b6@%3Cdev.tomcat.apache.org%3E
- web https://lists.apache.org/thread.html/r80e9c8417c77d52c62809168b96912bda70ddf7748f19f8210f745b1@%3Cusers.tomcat.apache.org%3E
- web https://lists.apache.org/thread.html/r7bc994c965a34876bd94d5ff15b4e1e30b6220a15eb9b47c81915b78@%3Ccommits.tomee.apache.org%3E
- web https://lists.apache.org/thread.html/r660cd379afe346f10d72c0eaa8459ccc95d83aff181671b7e9076919@%3Cusers.tomcat.apache.org%3E
- web https://lists.apache.org/thread.html/r441c1f30a252bf14b07396286f6abd8089ce4240e91323211f1a2d75@%3Cusers.tomcat.apache.org%3E