Detections
Analytics
Cisco IOS Software Bidirectional Forwarding Detection DoS (cisco-sa-20180328-bfd)
high Nessus Plugin ID 132680
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Synopsis
The remote device is missing a vendor-supplied security patch.Description
According to its self-reported version, Cisco IOS is affected by a denial of service (DoS) vulnerability in the Bidirectional Forwarding Detection (BFD) offload implementation due to insufficient error handling when the BFD header in a BFD packet is incomplete. An unauthenticated, remote attacker could exploit this, by sending a crafted BFD message to or across an affected switch, in order to crash the iosd process and trigger a system reload.Please see the included Cisco BIDs and Cisco Security Advisory for more information.
Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.
Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID(s) CSCvc40729.See Also
Plugin Details
Severity: High
ID: 132680
File Name: cisco-sa-20180328-bfd.nasl
Version: 1.17
Type: combined
Family: CISCO
Published: 1/7/2020
Updated: 4/25/2023
Configuration: Enable paranoid mode
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 6.0
CVSS v2
Risk Factor: High
Base Score: 7.8
Temporal Score: 6.4
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C
CVSS Score Source: CVE-2018-0155
CVSS v3
Risk Factor: High
Base Score: 8.6
Temporal Score: 8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:F/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:cisco:ios
Required KB Items: Host/Cisco/IOS/Version, Host/Cisco/IOS/Model, Settings/ParanoidReport
Exploit Available: true
Exploit Ease: Exploits are available
Patch Publication Date: 3/28/2018
Vulnerability Publication Date: 3/28/2018
CISA Known Exploited Vulnerability Due Dates: 3/17/2022
Reference Information
CVE: CVE-2018-0155
BID: 103565