CVE-2018-0250 Details

CVE-2018-0250

Published: 2018-05-02
Last Modified: 2019-10-09
CVE Author: NIST National Vulnerability Database
CVE Assigner: psirt@cisco.com
Summary

A vulnerability in Central Web Authentication (CWA) with FlexConnect Access Points (APs) for Cisco Aironet 1560, 1810, 1810w, 1815, 1830, 1850, 2800, and 3800 Series APs could allow an authenticated, adjacent attacker to bypass a configured FlexConnect access control list (ACL). The vulnerability is due to the AP ignoring the ACL download from the client during authentication. An attacker could exploit this vulnerability by connecting to the targeted device with a vulnerable configuration. A successful exploit could allow the attacker to bypass a configured client FlexConnect ACL. This vulnerability affects the following Cisco products if they are running a vulnerable release of Central Web Authentication with FlexConnect Access Points Software: Aironet 1560 Series Access Points, Aironet 1810 Series OfficeExtend Access Points, Aironet 1810w Series Access Points, Aironet 1815 Series Access Points, Aironet 1830 Series Access Points, Aironet 1850 Series Access Points, Aironet 2800 Series Access Points, Aironet 3800 Series Access Points. Note: Central Web Authentication with FlexConnect Access Points was an unsupported configuration until 8.5.100.0. Cisco Bug IDs: CSCve17756.

Analysis
Common Vulnerability Score System v2.0
Severity Low
Base Score 2.7/10
Exploit Score 5.1/10
Access Vector Adjacent_network
Access Complexity Low
Authentication Single
Impact Score 2.9/10
Confidentiality Impact None
Availability Impact None
Integrity Impact Partial
Vector String AV:A/AC:L/Au:S/C:N/I:P/A:N
Common Vulnerability Score System v3.1
Severity Medium
Base Score 4.1/10
Exploit Score 2.3/10
Access Vector Adjacent_network
Access Complexity Low
Privileges Required Low
Impact Score 1.4/10
Confidentiality Impact None
Availability Impact None
Integrity Impact Low
Scope Changed
User Interaction None
Vector String CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N
Products Reported
CPE Vulnerable Start Excluding
cpe:2.3:o:cisco:aironet_access_point_software:8.4\(100.0\):* Yes - -
cpe:2.3:o:cisco:aironet_access_point_software:8.7\(1.3\):*:* Yes - -
cpe:2.3:o:cisco:aironet_access_point_software:8.2\(160.0\):* Yes - -
References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180502-
http://www.securitytracker.com/id/1040818

CVE ID
CVE-2018-0250
Published
2018-05-02
Modified
2019-10-09
CVSSv2.0
Low
CVSSv3.1
Medium
PCI Compliance
Fail
US-CERT Alert
No
CWE
CWE-693

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