CVE intelligence and bounded remediation

CVE-2024-20277 — Cisco Thousandeyes Enterprise Agent security vulnerability

High CVSS 8

A vulnerability in the web-based management interface of Cisco ThousandEyes Enterprise Agent, Virtual Appliance installation type, could allow an authenticated, remote attacker to perform a command injection and elevate privileges to root. This vulnerability is due to insufficient validation of user-supplied input for the web interface. An attacker could exploit this vulnerability by sending a crafted HTTP packet to the affected device. A successful exploit could allow the attacker to execute arbitrary commands and elevate privileges to root.

Severity
High
CVSS
8 (3.1)
Published
2024-01-17
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-78

Affected products

  • cisco / thousandeyes_enterprise_agent

Matched remediation archetype

Command, code, expression, and template injection

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Check exposure

  • Trace untrusted values to process execution, interpreters, evaluators, template engines, dynamic imports, and administrative scripting features.
  • Determine whether the affected path is reachable across each trust boundary and which service account or host privilege it inherits.
  • Review configuration for optional execution features, unsafe compatibility modes, and shell invocation.

Remediate safely

  • Replace string-built commands or evaluated code with fixed operations and structured argument APIs that do not invoke a shell.
  • Use strict allowlists for operation identifiers and reject unexpected input before it reaches any interpreter.
  • Update the affected component and add inert regression tests covering metacharacters, encoding variants, and alternate request paths.

Authoritative sources

Complete CVE record and remediation plan

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