Vulnerability Details : CVE-2018-0252
A vulnerability in the IP Version 4 (IPv4) fragment reassembly function of Cisco 3500, 5500, and 8500 Series Wireless LAN Controller Software could allow an unauthenticated, remote attacker to cause an affected device to reload unexpectedly, resulting in a denial of service (DoS) condition. The vulnerability is due to a corruption of an internal data structure process that occurs when the affected software reassembles certain IPv4 packets. An attacker could exploit this vulnerability by sending certain malformed IPv4 fragments to an affected device. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. This vulnerability affects all releases of 8.4 until the first fixed release for the 5500 and 8500 Series Wireless LAN Controllers and releases 8.5.103.0 and 8.5.105.0 for the 3500, 5500, and 8500 Series Wireless LAN Controllers. Cisco Bug IDs: CSCvf89222.
Vulnerability category: OverflowDenial of service
Products affected by CVE-2018-0252
- cpe:2.3:o:cisco:wireless_lan_controller_software:8.5\(107.41\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:wireless_lan_controller_software:8.6\(1.108\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:wireless_lan_controller_software:8.4\(100.0\):*:*:*:*:*:*:*
- cpe:2.3:o:cisco:wireless_lan_controller_software:8.5\(107.30\):*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2018-0252
0.13%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 47 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2018-0252
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.8
|
HIGH | AV:N/AC:L/Au:N/C:N/I:N/A:C |
10.0
|
6.9
|
NIST | |
|
8.6
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H |
3.9
|
4.0
|
NIST |
CWE ids for CVE-2018-0252
-
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.Assigned by: nvd@nist.gov (Primary)
-
Assigned by: ykramarz@cisco.com (Secondary)
References for CVE-2018-0252
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https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180502-wlc-ip
Cisco Wireless LAN Controller IP Fragment Reassembly Denial of Service VulnerabilityVendor Advisory
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http://www.securitytracker.com/id/1040822
Cisco 3500, 5500, and 8500 Series Wireless LAN Controller IPv4 Fragment Reassembly Bug Lets Remote Users Cause the Target System to Reload - SecurityTrackerThird Party Advisory;VDB Entry
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