Detections
Analytics
Cisco IOS XE Software Packet Filtering Bypass (cisco-sa-cedge-filt-bypass-Y6wZMqm4)
high Nessus Plugin ID 143154
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Synopsis
The remote device is missing a vendor-supplied security patchDescription
According to its self-reported version, Cisco IOS XE is affected by a packet filtering bypass vulnerability.The vulnerability is due to improper traffic filtering conditions on an affected device. An unauthenticated, remote attacker could exploit this vulnerability by crafting a malicious TCP packet with specific characteristics and sending it to a targeted device. A successful exploit could allow the attacker to bypass the L3 and L4 traffic filters and inject an arbitrary packet into the network.
Please see the included Cisco BIDs and Cisco Security Advisory for more information.
Solution
Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvw12895See Also
Plugin Details
Severity: High
ID: 143154
File Name: cisco-sa-iosxe-cedge-filt-bypass-Y6wZMqm4.nasl
Version: 1.19
Type: combined
Family: CISCO
Published: 11/20/2020
Updated: 3/23/2022
Configuration: Enable paranoid mode
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Low
Score: 3.6
CVSS v2
Risk Factor: Medium
Base Score: 5
Temporal Score: 3.7
Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:N
CVSS Score Source: CVE-2020-3444
CVSS v3
Risk Factor: High
Base Score: 7.5
Temporal Score: 6.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:cisco:ios_xe
Required KB Items: Settings/ParanoidReport, Host/Cisco/IOS-XE/Version, Host/Cisco/SDWAN
Exploit Ease: No known exploits are available
Patch Publication Date: 11/4/2020
Vulnerability Publication Date: 11/4/2020
Reference Information
CVE: CVE-2020-3444