CVE intelligence and bounded remediation

CVE-2017-3838 — Cisco Secure Access Control System security vulnerability

Medium CVSS 6.1

A vulnerability in Cisco Secure Access Control System (ACS) could allow an unauthenticated, remote attacker to conduct a DOM-based cross-site scripting (XSS) attack against the user of the web interface of the affected system. More Information: CSCvc04838. Known Affected Releases: 5.8(2.5).

Severity
Medium
CVSS
6.1 (3.0)
Published
2017-02-22
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-79

Affected products

  • cisco / secure_access_control_system / 5.8(2.5)

Matched remediation archetype

Cross-site scripting and unsafe browser output

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Trace reflected, stored, and DOM-derived untrusted values into HTML, attributes, URLs, styles, scripts, and client-side template sinks.
  • Identify affected origins, authenticated user roles, sensitive browser capabilities, and where content is shared across tenants.
  • Review framework escaping, rich-text sanitization, legacy templates, and client-side rendering paths.

Remediate safely

  • Use context-aware framework output encoding and safe DOM APIs; keep untrusted data out of executable contexts.
  • Sanitize intentionally supported markup with a maintained allowlist policy and validate URLs and attributes separately.
  • Update affected rendering components and add tests for every output context using inert sentinel markup.

Authoritative sources

Complete CVE record and remediation plan

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