Cross-Site Scripting (XSS) in Telerik Reporting for ASP.NET WebForms Report Viewer control (CVE-2017-9140)
Summary
Cross-site scripting in Telerik Reporting for ASP.NET WebForms Report Viewer control (CVE-2017-9140). Risk of unauthorized operations or information disclosure.
Original description
The description as published by the source.
Cross-site scripting (XSS) vulnerability in Telerik.ReportViewer.WebForms.dll in Telerik Reporting for ASP.NET WebForms Report Viewer control before R1 2017 SP2 (11.0.17.406) allows remote attackers to inject arbitrary web script or HTML via the bgColor parameter to Telerik.ReportViewer.axd.
Source: NIST National Vulnerability Database NVD
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-2017-9140 has been found in Telerik Reporting for ASP.NET WebForms Report Viewer control.
Risk of unauthorized operations or information disclosure. CVSS score: 6.1/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Telerik Reporting for ASP.NET WebForms Report Viewer control CVE-2017-9140" on the vendor's site.
CVE-2017-9140 (Telerik Reporting for ASP.NET WebForms Report Viewer control) — CWE-79 / CVSS v3 6.1
Attack vector: remote (network-reachable) / unauthenticated
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.
Cross-site scripting (XSS) (CWE-79) exists in Telerik Reporting for ASP.NET WebForms Report Viewer control.
Check the vendor advisory for the affected versions of Telerik Reporting for ASP.NET WebForms Report Viewer control.
Severity: Medium (CVSS 6.1/10). Risk of unauthorized operations or information disclosure.
Update to the patched release per vendor advisory.
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. Audit SBOM/dependencies 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
Audit SBOM/dependencies for affected components.資産台帳・SBOM・依存マニフェストで Telerik Reporting for ASP.NET WebForms Report Viewer control を使っているサービスとバージョンを洗い出す。
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2Post-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。
References
- advisory knowledgebase.progress.com
- advisory veracode.com
- web telerik.com