Vulnerability identifier: #VU15411

Vulnerability risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-0442

CWE-ID: CWE-200

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Cisco Wireless LAN Controller
Hardware solutions / Firmware

Vendor: Cisco Systems, Inc

Description

The vulnerability allows a remote attacker to obtain potentially sensitive information.

The weakness exists in the Control and Provisioning of Wireless Access Points (CAPWAP) protocol component of Cisco Wireless LAN Controller (WLC) Software due to insufficient condition checks in the part of the code that handles CAPWAP keepalive requests. A remote attacker can send a specially crafted CAPWAP keepalive packet to a vulnerable Cisco WLC device, retrieve the contents of device memory, which can lead to the disclosure of confidential information.

Mitigation
The vulnerability has been addressed in the versions 8.7(102.0), 8.7(1.14), 8.6(101.0), 8.6(1.103), 8.5(110.0), 8.5(107.59), 8.3(140.0), 8.3(134.67), 8.2(170.0), 8.2(167.207), 8.2(167.8), 8.0(154.2).

Vulnerable software versions

Cisco Wireless LAN Controller: 8.2.151.0

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External links
http://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20181017-wlc-capwap-memory-leak

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.