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CVE-2017-13706: Lansweeper: Server-side request forgery

CVE-2017-13706 is rated critical with a CVSS v3.0 base score of 9.9 and affects Lansweeper. Per its scoring, it can be exploited over the network, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

XML external entity (XXE) vulnerability in the import package functionality of the deployment module in Lansweeper before 6.0.100.67 allows remote authenticated users to obtain sensitive information, cause a denial of service, conduct server-side request forgery (SSRF) attacks, conduct internal port scans, or have unspecified other impact via an XML request, aka bug #572705.

Severity breakdown

CVSS v3.0 9.9: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/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: Low. A basic user account is enough.
  • User interaction: None. No action from any user is needed.
  • Scope: Changed. Impact reaches beyond the vulnerable component to other resources.
  • 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

  • Lansweeper: up to and including 6.0.100.29

References