Vulnerability Details : CVE-2017-12237
A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco IOS 15.0 through 15.6 and Cisco IOS XE 3.5 through 16.5 could allow an unauthenticated, remote attacker to cause high CPU utilization, traceback messages, or a reload of an affected device that leads to a denial of service (DoS) condition. The vulnerability is due to how an affected device processes certain IKEv2 packets. An attacker could exploit this vulnerability by sending specific IKEv2 packets to an affected device to be processed. A successful exploit could allow the attacker to cause high CPU utilization, traceback messages, or a reload of the affected device that leads to a DoS condition. This vulnerability affects Cisco devices that have the Internet Security Association and Key Management Protocol (ISAKMP) enabled. Although only IKEv2 packets can be used to trigger this vulnerability, devices that are running Cisco IOS Software or Cisco IOS XE Software are vulnerable when ISAKMP is enabled. A device does not need to be configured with any IKEv2-specific features to be vulnerable. Many features use IKEv2, including different types of VPNs such as the following: LAN-to-LAN VPN; Remote-access VPN, excluding SSL VPN; Dynamic Multipoint VPN (DMVPN); and FlexVPN. Cisco Bug IDs: CSCvc41277.
Vulnerability category: Denial of service
Products affected by CVE-2017-12237
- cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
- cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*
Max 200 conditions are displayed on this page, to prevent potential performance issues,
please refer to NVD for more details.
CVE-2017-12237 is in the CISA Known Exploited Vulnerabilities Catalog
CISA vulnerability name:
Cisco IOS and IOS XE Software Internet Key Exchange Denial-of-Service Vulnerability
CISA required action:
Apply updates per vendor instructions.
CISA description:
A vulnerability in the Internet Key Exchange Version 2 (IKEv2) module of Cisco IOS and Cisco IOS XE could allow an unauthenticated, remote attacker to cause high CPU utilization, traceback messages, or a reload of an affected device that leads to a denial of service.
Notes:
https://nvd.nist.gov/vuln/detail/CVE-2017-12237
Added on
2022-03-03
Action due date
2022-03-24
Exploit prediction scoring system (EPSS) score for CVE-2017-12237
8.58%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 92 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2017-12237
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 | |
7.5
|
HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | |
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
3.9
|
3.6
|
NIST | 2024-07-16 |
CWE ids for CVE-2017-12237
-
Assigned by:
- psirt@cisco.com (Secondary)
- ykramarz@cisco.com (Secondary)
-
The product does not properly control the allocation and maintenance of a limited resource.Assigned by: nvd@nist.gov (Primary)
References for CVE-2017-12237
-
http://www.securityfocus.com/bid/101037
Cisco IOS and IOS XE Software CVE-2017-12237 Denial of Service VulnerabilityBroken Link;Third Party Advisory;VDB Entry
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170927-ike
Cisco IOS and IOS XE Software Internet Key Exchange Denial of Service VulnerabilityVendor Advisory
-
http://www.securitytracker.com/id/1039460
Cisco IOS/IOS XE IKEv2 Processing Flaw Lets Remote Users Cause the Target System to Reload - SecurityTrackerBroken Link;Third Party Advisory;VDB Entry
Jump to