CVE intelligence and bounded remediation

CVE-2017-6662 — Cisco Evolved Programmable Network Manager security vulnerability

High CVSS 8

A vulnerability in the web-based user interface of Cisco Prime Infrastructure (PI) and Evolved Programmable Network Manager (EPNM) could allow an authenticated, remote attacker read and write access to information stored in the affected system as well as perform remote code execution. The attacker must have valid user credentials. The vulnerability is due to improper handling of XML External Entity (XXE) entries when parsing an XML file. An attacker could exploit this vulnerability by convincing the administrator of an affected system to import a crafted XML file with malicious entries which could allow the attacker to read and write files and execute remote code within the application, aka XML Injection. Cisco Prime Infrastructure software releases 1.1 through 3.1.6 are vulnerable. Cisco EPNM software releases 1.2, 2.0, and 2.1 are vulnerable. Cisco Bug IDs: CSCvc23894 CSCvc49561.

Severity
High
CVSS
8 (3.0)
Published
2017-06-26
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-20, CWE-611

Affected products

  • cisco / evolved_programmable_network_manager / 1.2.0
  • cisco / evolved_programmable_network_manager / 1.2.1.3
  • cisco / evolved_programmable_network_manager / 1.2.200
  • cisco / evolved_programmable_network_manager / 1.2.300
  • cisco / evolved_programmable_network_manager / 1.2.400
  • cisco / evolved_programmable_network_manager / 1.2.500

Showing 6 representative product identities from 30 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

XML external entity and unsafe XML processing

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Check exposure

  • Inventory XML parsers used by APIs, file imports, office or image formats, identity protocols, feeds, and background jobs.
  • Determine whether document type declarations, external entities, XInclude, schemas, or network resolvers are enabled.
  • Map parser filesystem and network access and the sensitivity of documents it processes.

Remediate safely

  • Configure each parser to reject document type declarations and disable external entity, XInclude, and network resolution features.
  • Prefer a data format or hardened parser that does not support external resolution, and apply input size and depth limits.
  • Update affected XML libraries and centralize secure parser construction so callers cannot silently override it.

Authoritative sources

Complete CVE record and remediation plan

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