Detections
Analytics
Cisco IOS XR Software IPv6 Flood DoS (cisco-sa-xripv6-spJem78K)
medium Nessus Plugin ID 147893
Language:
Synopsis
The remote device is missing a vendor-supplied security patch.Description
According to its self-reported version, IOS-XR is affected by a denial of service vulnerability due to the software incorrectly forwarding IPv6 packets that have an IPv6 node-local multicast group destination and are received on the management interfaces. An unauthenticated, adjacent attacker can exploit this, by connecting to the same network as the management interfaces and injecting IPv6 packets that have an IPv6 node-local multicast group address destination, to cause an IPv6 flood on the corresponding network, resulting in network degradation or a DoS condition.Please see the included Cisco BID and Cisco Security Advisory for more information.
Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvv45504.See Also
Plugin Details
Severity: Medium
ID: 147893
File Name: cisco-sa-xripv6-spJem78K-iosxr.nasl
Version: 1.12
Type: combined
Family: CISCO
Published: 3/19/2021
Updated: 1/9/2024
Configuration: Enable paranoid mode
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: Low
Base Score: 3.3
Temporal Score: 2.4
Vector: CVSS2#AV:A/AC:L/Au:N/C:N/I:N/A:P
CVSS Score Source: CVE-2021-1268
CVSS v3
Risk Factor: Medium
Base Score: 6.5
Temporal Score: 5.7
Vector: CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:cisco:ios_xr
Required KB Items: Settings/ParanoidReport, Host/Cisco/IOS-XR/Version
Exploit Ease: No known exploits are available
Patch Publication Date: 2/3/2021
Vulnerability Publication Date: 2/3/2021
Reference Information
CVE: CVE-2021-1268