CVE-2017-3873: Input Validation
First published: Tue May 16 2017(Updated: )
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.
Credit: ykramarz@cisco.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Cisco Aironet Access Point Firmware | =8.3_102.0 | |
| Cisco Aironet 1830e | ||
| Cisco Aironet 1830i | ||
| Cisco Aironet 1850e | ||
| Cisco Aironet 1850i | ||
| Cisco Aironet 2800e | ||
| Cisco Aironet 2800i | ||
| Cisco Aironet 3800e | ||
| Cisco Aironet 3800i | ||
| Cisco Aironet 3800p |
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Reference Links
- agent/weakness
- agent/type
- agent/tags
- agent/event
- agent/severity
- agent/references
- agent/author
- agent/description
- agent/first-publish-date
- agent/last-modified-date
- agent/softwarecombine
- collector/nvd-index
- agent/software-canonical-lookup-request
- vendor/cisco
- canonical/cisco aironet access point firmware
- version/cisco aironet access point firmware/8.3_102.0
- canonical/cisco aironet 1830e
- canonical/cisco aironet 1830i
- canonical/cisco aironet 1850e
- canonical/cisco aironet 1850i
- canonical/cisco aironet 2800e
- canonical/cisco aironet 2800i
- canonical/cisco aironet 3800e
- canonical/cisco aironet 3800i
- canonical/cisco aironet 3800p