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CiscoCVE-2017-3864

HistoryMar 22, 2017 - 7:59 p.m.

CVE-2017-3864

2017-03-2219:59:00

CWE-399

cisco

web.nvd.nist.gov

cve-2017-3864

dhcp

cisco

ios

ios xe

vulnerability

denial of service

remote attacker

nvd

cisco bug ids

cscuu43892

CVSS2

7.8

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS3

8.6

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

AI Score

8.3

Confidence

High

EPSS

0.002

Percentile

62.0%

JSON

A vulnerability in the DHCP client implementation of Cisco IOS (12.2, 12.4, and 15.0 through 15.6) and Cisco IOS XE (3.3 through 3.7) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability occurs during the parsing of a crafted DHCP packet. An attacker could exploit this vulnerability by sending crafted DHCP packets to an affected device that is configured as a DHCP client. A successful exploit could allow the attacker to cause a reload of an affected device, resulting in a DoS condition. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS or IOS XE Software and using a specific DHCP client configuration. Cisco Bug IDs: CSCuu43892.

Affected configurations

Nvd

Node

ciscoiosRange15.0–15.6

ciscoiosMatch12.2

ciscoiosMatch12.4

ciscoios_xeRange3.3–3.7

VendorProductVersionCPE
ciscoios*cpe:2.3:o:cisco:ios:*:*:*:*:*:*:*:*
ciscoios12.2cpe:2.3:o:cisco:ios:12.2:*:*:*:*:*:*:*
ciscoios12.4cpe:2.3:o:cisco:ios:12.4:*:*:*:*:*:*:*
ciscoios_xe*cpe:2.3:o:cisco:ios_xe:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
cisco	ios	*	cpe:2.3:o:cisco:ios::::::::
cisco	ios	12.2	cpe:2.3:o:cisco:ios:12.2:::::::*
cisco	ios	12.4	cpe:2.3:o:cisco:ios:12.4:::::::*
cisco	ios_xe	*	cpe:2.3:o:cisco:ios_xe::::::::

CNA Affected

[
  {
    "product": "Cisco IOS and IOS XE",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "Cisco IOS and IOS XE"
      }
    ]
  }
]

References

www.securityfocus.com/bid/97012

www.securitytracker.com/id/1038103

tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20170322-dhcpc

Social References

CVSS2

7.8

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

COMPLETE

AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS3

8.6

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

AI Score

8.3

Confidence

High

EPSS

0.002

Percentile

62.0%

JSON

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