vulnwire
7.5high

CVE-2018-0156KEVin critical feed

A vulnerability in the Smart Install feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacke…

Published 8 y ago · modified 4 mo ago · JSON

CVSS
7.5
v3.1 · CNA
CISA KEV
Yes
added 2022-03-03
EPSS
9.4%
percentile 95%
Public exploits
0
none known

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.

Known exploited (CISA KEV)

Added
4 y ago
Due date
2022-03-17 (4 y ago)
Ransomware use
Unknown
Required action
Apply updates per vendor instructions.
Vendor / product
Cisco / IOS Software and Cisco IOS XE Software
CISA name
Cisco IOS Software and Cisco IOS XE Software Smart Install Denial-of-Service Vulnerability

CISA SSVC assessment

Exploitation
Active — exploited in the wild
Automatable
yes
Technical impact
partial
Assessed
23 mo ago

Exploit prediction (EPSS)

9.36% probability of exploitation in the next 30 days, higher than 95% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
CISA ADP3.17.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD3.17.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CNA3.17.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD2.07.8AV:N/AC:L/Au:N/C:N/I:N/A:C

Affected products

  • n/a Cisco IOS and IOS XE

Classification

Weakness
  • CWE-399 Resource Management Errors
  • CWE-20 Improper Input Validation
Technology feeds
Cisco IOS (RSS, critical only)

References

  • ics-cert.us-cert.gov /advisories/ICSA-18-107-04 · x_refsource_MISC, x_transferred
  • tools.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-smi · x_refsource_CONFIRM, x_transferred
  • securitytracker.com /id/1040596 · vdb-entry, x_refsource_SECTRACK, x_transferred
  • securityfocus.com /bid/103569 · vdb-entry, x_refsource_BID, x_transferred
  • ics-cert.us-cert.gov /advisories/ICSA-18-107-05 · x_refsource_MISC, x_transferred
  • cisa.gov /known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-0156 · government-resource

Sources

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