vulnwire
8.6high

CVE-2018-0174KEVin critical feed

A vulnerability in the DHCP option 82 encapsulation functionality of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenti…

Published 8 y ago · modified 4 mo ago · JSON

CVSS
8.6
v3.1 · CNA
CISA KEV
Yes
added 2022-03-03
EPSS
7.6%
percentile 95%
Public exploits
0
none known

A vulnerability in the DHCP option 82 encapsulation functionality of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability exists because the affected software performs incomplete input validation of option 82 information that it receives in DHCP Version 4 (DHCPv4) packets from DHCP relay agents. An attacker could exploit this vulnerability by sending a crafted DHCPv4 packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Cisco Bug IDs: CSCuh91645.

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 XE Software
CISA name
Cisco IOS Software and Cisco IOS XE Software Improper Input Validation Vulnerability

CISA SSVC assessment

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

Exploit prediction (EPSS)

7.61% probability of exploitation in the next 30 days, higher than 95% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
CISA ADP3.18.6CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
NVD3.18.6CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
CNA3.18.6CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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-20 Improper Input Validation
Technology feeds
Cisco IOS (RSS, critical only)

References

  • securityfocus.com /bid/103554 · vdb-entry, x_refsource_BID, x_transferred
  • ics-cert.us-cert.gov /advisories/ICSA-18-107-04 · x_refsource_MISC, x_transferred
  • tenable.com /security/research/tra-2018-06 · x_refsource_MISC, x_transferred
  • securitytracker.com /id/1040591 · vdb-entry, x_refsource_SECTRACK, x_transferred
  • tools.cisco.com /security/center/content/CiscoSecurityAdvisory/cisco-sa-20180328-dhcpr3 · x_refsource_CONFIRM, 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-2018-0174 · government-resource

Sources

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