CVE intelligence and bounded remediation

CVE-2024-20352 — Cisco Emergency Responder security vulnerability

High CVSS 8.8

A vulnerability in Cisco Emergency Responder could allow an authenticated, remote attacker to conduct a directory traversal attack, which could allow the attacker to perform arbitrary actions on an affected device. This vulnerability is due to insufficient protections for the web UI of an affected system. An attacker could exploit this vulnerability by sending crafted requests to the web UI. A successful exploit could allow the attacker to perform arbitrary actions with the privilege level of the affected user, such as accessing password or log files or uploading and deleting existing files from the system.

Severity
High
CVSS
8.8 (3.1)
Published
2024-04-03
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-23, CWE-22

Affected products

  • cisco / emergency_responder
  • cisco / emergency_responder / 14
  • cisco / emergency_responder / 14su1
  • cisco / emergency_responder / 14su2
  • cisco / emergency_responder / 14su3
  • cisco / emergency_responder / 14su3a

Matched remediation archetype

Path traversal, unsafe upload, and file handling

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Check exposure

  • Trace untrusted filenames, archive entries, URLs, and path segments into read, write, include, extraction, and upload operations.
  • Identify filesystem roots, mount permissions, symbolic-link behavior, archive handling, and whether uploaded content is web-accessible or executable.
  • Review canonicalization and containment checks across supported operating systems and storage backends.

Remediate safely

  • Generate server-side storage identifiers and resolve paths beneath a fixed root using filesystem-aware containment checks.
  • Reject absolute, parent-relative, alternate-separator, device, link, and archive entries that escape the intended root.
  • Store uploads outside executable or served paths, validate type and size, and use private atomic temporary files.

Authoritative sources

Complete CVE record and remediation plan

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