CVE intelligence and bounded remediation

CVE-2020-3115 — Cisco Sd-Wan Firmware security vulnerability

High CVSS 8.8

A vulnerability in the CLI of the Cisco SD-WAN Solution vManage software could allow an authenticated, local attacker to elevate privileges to root-level privileges on the underlying operating system. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending a crafted file to the affected system. An exploit could allow the attacker to elevate privileges to root-level privileges.

Severity
High
CVSS
8.8 (3.1)
Published
2020-01-26
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-264, CWE-269

Affected products

  • cisco / sd-wan_firmware / 18.4.1
  • cisco / sd-wan_firmware / 19.1.0

Matched remediation archetype

Privilege escalation and unsafe privilege management

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

Check exposure

  • Map service accounts, operating-system identities, roles, capabilities, impersonation, set-user transitions, and administrative helper paths.
  • Determine whether untrusted users or lower-privilege processes can reach the affected transition or modify inputs it trusts.
  • Review file, socket, registry, device, job, container, and cloud-role permissions used before and after privilege changes.

Remediate safely

  • Apply the supported fix and redesign privileged operations as a minimal, authenticated, allowlisted interface.
  • Drop privileges before processing untrusted input, verify the drop succeeds, and remove unnecessary roles, capabilities, and write permissions.
  • Validate ownership and permissions at time of use and add explicit lower-to-higher privilege boundary tests.

Authoritative sources

Complete CVE record and remediation plan

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