Detections
Analytics
Cisco IOS XE Software Tool Command Language Privilege Escalation (cisco-sa-iosxe-priv-esc-grbtubU)
medium Nessus Plugin ID 159712
Language:
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.- A vulnerability in the Tool Command Language (Tcl) interpreter of Cisco IOS XE Software could allow an authenticated, local attacker to escalate from privilege level 15 to root-level privileges. This vulnerability is due to insufficient input validation of data that is passed into the Tcl interpreter. An attacker could exploit this vulnerability by loading malicious Tcl code on an affected device. A successful exploit could allow the attacker to execute arbitrary commands as root. By default, Tcl shell access requires privilege level 15. (CVE-2022-20676)
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 CSCvy35833See Also
http://www.nessus.org/u?b8aa4a51
https://tools.cisco.com/security/center/viewErp.x?alertId=ERP-74561
Plugin Details
Severity: Medium
ID: 159712
File Name: cisco-sa-iosxe-priv-esc-grbtubU-iosxe.nasl
Version: 1.7
Type: combined
Family: CISCO
Published: 4/13/2022
Updated: 5/3/2022
Supported Sensors: Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.9
CVSS v2
Risk Factor: High
Base Score: 7.2
Temporal Score: 5.3
Vector: CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C
CVSS Score Source: CVE-2022-20676
CVSS v3
Risk Factor: Medium
Base Score: 6.7
Temporal Score: 5.8
Vector: CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/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: 4/13/2022
Vulnerability Publication Date: 4/13/2022
Reference Information
CVE: CVE-2022-20676