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CVE-2017-7400
medium
CVSS 4.8
Cross-Site Scripting (XSS) in horizon (CVE-2017-7400)
Summary
cross-site scripting in horizon (CVE-2017-7400). Risk of unauthorized operations or information disclosure. Mitigation: upgrade to `11.0.1` or later.
AI summary snake-internal / snake-material-v2
A vulnerability tracked as **CVE-2017-7400** has been found in horizon.
Risk of unauthorized operations or information disclosure. CVSS score: 4.8/10.
What to do: upgrade horizon to **11.0.1** or later.
If unsure, ask your IT team or search "horizon CVE-2017-7400" on the vendor's site.
CVE-2017-7400 (horizon) — CWE-79 / CVSS v3 4.8
Attack vector: remote (network-reachable)
Patched: `11.0.1` — 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.
❓ What is the problem
**Cross-site scripting (XSS)** (CWE-79) exists in horizon.
📍 Affected scope
horizon — .
🔥 Severity
Severity: Medium (CVSS 4.8/10). Risk of unauthorized operations or information disclosure
🔧 How to fix
Update to **11.0.1**.
🛡️ 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 'horizon' .` 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
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1Identify exposure identify
grep -r 'horizon' . | 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 `horizon` を grep し、稼働しているサービス・バージョンを把握する。
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6Apply patch patch
Upgrade horizon to 11.0.1ステージング環境で 11.0.1 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
PyPI
horizon
[{"type":"ECOSYSTEM","events":[{"introduced":"11.0.0"},{"fixed":"11.0.1"}]}]
References
- advisory http://www.securityfocus.com/bid/97324
- advisory https://access.redhat.com/errata/RHSA-2017:1598
- advisory https://access.redhat.com/errata/RHSA-2017:1739
- advisory https://nvd.nist.gov/vuln/detail/CVE-2017-7400
- advisory https://github.com/advisories/GHSA-47vp-44v9-rhgq
- package https://pypi.org/project/horizon
- web https://launchpad.net/bugs/1667086
- web https://opendev.org/openstack/horizon/commit/1407cfe53144146b29679de21f28c952282043ae
- web https://opendev.org/openstack/horizon/commit/511b325b45b6bd7a88bb6df1a4639b80d0121277
- web https://opendev.org/openstack/horizon/commit/a835dbfbaa2c70329c08d4b8429d49315dc6d651
- web https://opendev.org/openstack/horizon/commit/ce80bb6fec3cb0262728e7ae8b9d695cf832e5bf