Quantum Secular Labs / Blog / Advisories

CVE-2018-18571: Citrix Xenmobile Server: Improper Authentication

CVE-2018-18571 is rated critical with a CVSS v3.1 base score of 9.1 and affects Citrix Xenmobile Server. Per its scoring, it can be exploited over the network, without authentication, without any user interaction.

Vulnerability description

An Incorrect Access Control vulnerability has been identified in Citrix XenMobile Server 10.8.0 before Rolling Patch 6 and 10.9.0 before Rolling Patch 3. An attacker can impersonate and take actions on behalf of any Mobile Application Management (MAM) enrolled device.

Severity breakdown

CVSS v3.1 9.1: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

  • 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: None. No effect on availability.

Underlying weakness

CWE-287: Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

Affected products

  • Citrix Xenmobile Server: 10.8.0; 10.8.0 rolling_patch1; 10.8.0 rolling_patch2; 10.8.0 rolling_patch3; 10.8.0 rolling_patch4; 10.8.0 rolling_patch5; 10.9.0; 10.9.0 rolling_patch1; 10.9.0 rolling_patch2

References