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CVE-2018-15805: Accusoft Prizmdoc: XML external entity injection

CVE-2018-15805 is rated critical with a CVSS v3.0 base score of 9.1 and affects Accusoft Prizmdoc. Per its scoring, it can be exploited over the network, without authentication, without any user interaction.

Vulnerability description

Accusoft PrizmDoc HTML5 Document Viewer before 13.5 contains an XML external entity (XXE) vulnerability, allowing an attacker to read arbitrary files or cause a denial of service (resource consumption).

Severity breakdown

CVSS v3.0 9.1: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/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: None. No loss of integrity.
  • 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

  • Accusoft Prizmdoc: before 13.5

References