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CVE-2017-3873

Severity CVSS v4.0:
Pending analysis
Type:
CWE-20 Input Validation
Publication date:
16/05/2017
Last modified:
20/04/2025

Description

A vulnerability in the Plug-and-Play (PnP) subsystem of the Cisco Aironet 1800, 2800, and 3800 Series Access Points running a Lightweight Access Point (AP) or Mobility Express image could allow an unauthenticated, adjacent attacker to execute arbitrary code with root privileges. The vulnerability is due to insufficient validation of PnP server responses. The PnP feature is only active while the device does not contain a configuration, such as a first time boot or after a factory reset has been issued. An attacker with the ability to respond to PnP configuration requests from the affected device can exploit the vulnerability by returning malicious PnP responses. If a Cisco Application Policy Infrastructure Controller - Enterprise Module (APIC-EM) is available on the network, the attacker would need to exploit the issue in the short window before a valid PnP response was received. If successful, the attacker could gain the ability to execute arbitrary code with root privileges on the underlying operating system of the device. Cisco has confirmed that the only vulnerable software version is 8.3.102.0. Cisco Bug IDs: CSCvb42386.

Impact

Vector 3.x
CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Adjacent
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.50
Severity 3.x
HIGH
Vector 2.0
AV:A/AC:M/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 7.90 HIGH
Vector: AV:A/AC:M/Au:N/C:C/I:C/A:C

Attack Vector (AV): Adjacent
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete

Base Score 2.0
7.90
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:cisco:aironet_access_point_firmware:8.3_102.0:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1830e:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1830i:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1850e:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_1850i:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_2800e:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_2800i:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_3800e:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_3800i:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:aironet_3800p:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools