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CVE-2017-14759: Opentext Document Sciences Xpression: Server-side request forgery

CVE-2017-14759 is rated critical with a CVSS v3.0 base score of 9.8 and affects Opentext Document Sciences Xpression. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

OpenText Document Sciences xPression (formerly EMC Document Sciences xPression) v4.5SP1 Patch 13 (older versions might be affected as well) is prone to an XML External Entity vulnerability: /xFramework/services/QuickDoc.QuickDocHttpSoap11Endpoint/. An unauthenticated user is able to read directory listings or system files, or cause SSRF or Denial of Service.

Severity breakdown

CVSS v3.0 9.8: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

  • Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
  • Attack complexity: Low. No special conditions; the attack can be repeated reliably.
  • Privileges required: None. No account or prior access is needed.
  • User interaction: None. No action from any user is needed.
  • Scope: Unchanged. Impact stays within the vulnerable component.
  • Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
  • Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
  • Availability impact: High. Total loss of availability; the component can be shut down.

Underlying weakness

CWE-611: Improper Restriction of XML External Entity Reference

The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.

Affected products

  • Opentext Document Sciences Xpression: up to and including 4.5

References