Detections
Analytics

Cisco IOS XR DHCPv4 Message Saturation DoS

medium Nessus Plugin ID 82473

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Synopsis

The remote device is missing a vendor-supplied security patch.

Description

The remote Cisco ASR 9000 device is running a version of Cisco IOS XR that is affected by a denial of service vulnerability due to improper processing of crafted DHCP messages. An unauthenticated, remote attacker can exploit this issue by sending a large amount of crafted DHCP messages to a targeted interface to cause the device to stop responding, resulting in a denial of service condition.

Solution

Apply the relevant patch referenced in Cisco bug ID CSCup67822.

See Also

https://tools.cisco.com/security/center/viewAlert.x?alertId=38006

https://tools.cisco.com/bugsearch/bug/CSCup67822

Plugin Details

Severity: Medium

ID: 82473

File Name: cisco-sn-CSCup67822-iosxr.nasl

Version: 1.5

Type: combined

Family: CISCO

Published: 3/31/2015

Updated: 4/8/2021

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 2.5

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS Score Source: CVE-2015-0672

Vulnerability Information

CPE: cpe:/o:cisco:ios_xr, cpe:/h:cisco:asr

Required KB Items: Host/Cisco/IOS-XR/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 3/24/2015

Vulnerability Publication Date: 3/24/2015

Reference Information

CVE: CVE-2015-0672

BID: 73318

CISCO-BUG-ID: CSCup67822