CVE intelligence and bounded remediation
CVE-2021-1491 — Cisco Catalyst Sd-Wan Manager security vulnerability
A vulnerability in the web-based management interface of Cisco SD-WAN vManage Software could allow an authenticated, remote attacker to read arbitrary files on the underlying file system of the device. This vulnerability is due to insufficient file scope limiting. An attacker could exploit this vulnerability by creating a specific file reference on the file system and then accessing it through the web-based management interface. A successful exploit could allow the attacker to read arbitrary files from the file system of the underlying operating system.Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
- Severity
- Medium
- CVSS
- 6.5 (3.0)
- Published
- 2024-11-15
- CISA KEV
- Not currently listed
- Ecosystem
- software/application
- Weaknesses
- CWE-59
Affected products
- cisco / catalyst_sd-wan_manager / 17.2.4
- cisco / catalyst_sd-wan_manager / 17.2.5
- cisco / catalyst_sd-wan_manager / 17.2.6
- cisco / catalyst_sd-wan_manager / 17.2.7
- cisco / catalyst_sd-wan_manager / 17.2.8
- cisco / catalyst_sd-wan_manager / 17.2.9
Showing 6 representative product identities from 63 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.
Matched remediation archetype
Path traversal, unsafe upload, and file handling
This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.
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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