Detections
Analytics
Cisco IOS XE Software TrustSec CLI Parser DoS (cisco-sa-trustsec-dos-7fuXDR2)
high Nessus Plugin ID 154233
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Synopsis
The remote device is missing a vendor-supplied security patchDescription
According to its self-reported version, Cisco IOS XE Software is affected by a vulnerability in the TrustSec CLI parser that allows an authenticated, remote attacker to cause an affected device to reload. This vulnerability is due to an improper interaction between the web UI and the CLI parser. An attacker could exploit this vulnerability by requesting a particular CLI command to be run through the web UI. A successful exploit could allow the attacker to cause the device to reload, resulting in a denial of service (DoS) condition. 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 CSCvx66699See Also
http://www.nessus.org/u?c00ec9af
http://tools.cisco.com/security/center/viewErp.x?alertId=ERP-74581
Plugin Details
Severity: High
ID: 154233
File Name: cisco-sa-trustsec-dos-7fuXDR2-iosxe.nasl
Version: 1.4
Type: combined
Family: CISCO
Published: 10/19/2021
Updated: 9/28/2023
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 4.4
CVSS v2
Risk Factor: Medium
Base Score: 6.8
Temporal Score: 5
Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:N/A:C
CVSS Score Source: CVE-2021-34699
CVSS v3
Risk Factor: High
Base Score: 7.7
Temporal Score: 6.7
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
Vulnerability Information
CPE: cpe:/o:cisco:ios_xe
Required KB Items: Host/Cisco/IOS-XE/Version
Exploit Ease: No known exploits are available
Patch Publication Date: 9/22/2021
Vulnerability Publication Date: 9/22/2021
Reference Information
CVE: CVE-2021-34699