Cisco StarOS Privilege Escalation (cisco-sa-staros-privilege-esc-pyb7YTd)

medium Nessus Plugin ID 141356
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The remote device is missing a vendor-supplied security patch.


According to its self-reported version, the Cisco StarOS operating system on the remote Cisco ASR 5000 series router is affected by a privilege escalation vulnerability due to insufficient validation of CLI commands. An authenticated, local attacker can exploit this, by sending crafted commands to the CLI, in order to execute arbitrary code with the privileges of the root user on the affected device.

Please see the included Cisco BIDs and Cisco Security Advisory for more information.


Upgrade to the relevant fixed version referenced in Cisco bug ID CSCvv34222

See Also

Plugin Details

Severity: Medium

ID: 141356

File Name: cisco-sa-staros-privilege-esc-pyb7YTd.nasl

Version: 1.3

Type: local

Family: CISCO

Published: 10/9/2020

Updated: 10/19/2020

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2020-3602


Risk Factor: Medium

Score: 5.9


Risk Factor: High

Base Score: 7.2

Temporal Score: 5.3

Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C

Temporal Vector: E:U/RL:OF/RC:C


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: E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:cisco:asr_5000_series

Required KB Items: Host/Cisco/ASR/Model, Host/Cisco/StarOS, Host/Cisco/StarOS/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 10/7/2020

Vulnerability Publication Date: 10/7/2020

Reference Information

CVE: CVE-2020-3602


CISCO-SA: cisco-sa-staros-privilege-esc-pyb7YTd

IAVA: 2020-A-0451