High severity · published Mar 28, 2018
CVE-2018-0156
Cisco IOS Software and Cisco IOS XE Software Smart Install Denial-of-Service Vulnerability
In wildKEV
7.5
CVSS
9.4%
EPSS
Yes
On KEV
Description
A vulnerability in the Smart Install feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to trigger a reload of an affected device, resulting in a denial of service (DoS) condition. The vulnerability is due to improper validation of packet data. An attacker could exploit this vulnerability by sending a crafted packet to an affected device on TCP port 4786. Only Smart Install client switches are affected. Cisco devices that are configured as a Smart Install director are not affected by this vulnerability. Cisco Bug IDs: CSCvd40673.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)9.4% · higher than 95% of CVEs
Exploited in the wildYes
CISA KEVListed Mar 3, 2022
Federal remediation dueMar 17, 2022
Ransomware campaign useNot known
Affected products
Which versions
IX
IOS XE · Cisco
15.2(2)e4; 15.2(2a)ja · source: NVD
CI
Cisco IOS and IOS XE ·
Cisco IOS and IOS XE · source: vendor
IO
Ios · Cisco
15.2(2)e4; 15.2(2a)ja · source: NVD
IS
IOS Software and Cisco IOS XE Software · Cisco
All versions, or not specified · source: KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2018-0156
CVE.org
https://www.cve.org/CVERecord?id=CVE-2018-0156
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
x_refsource_MISC
https://ics-cert.us-cert.gov/advisories/ICSA-18-107-04
x_refsource_CONFIRM
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-smi
vdb-entry
http://www.securitytracker.com/id/1040596
vdb-entry
http://www.securityfocus.com/bid/103569
x_refsource_MISC
https://ics-cert.us-cert.gov/advisories/ICSA-18-107-05
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