Vulnerability Name:

CVE-2020-3602 (CCN-189490)

Assigned:2019-12-12
Published:2020-10-07
Updated:2020-10-16
Summary:A vulnerability in the CLI of Cisco StarOS operating system for Cisco ASR 5000 Series Routers could allow an authenticated, local attacker to elevate privileges on an affected device. The vulnerability is due to insufficient input validation of CLI commands. An attacker could exploit this vulnerability by sending crafted commands to the CLI. A successful exploit could allow the attacker to execute arbitrary code with the privileges of the root user on the affected device. To exploit this vulnerability, an attacker would need to have valid credentials on an affected device and know the password for the cli test-commands command.
CVSS v3 Severity:6.7 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H)
5.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
6.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H)
5.5 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): High
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:7.2 High (CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
6.4 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:P/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-78
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2020-3602

Source: XF
Type: UNKNOWN
cisco-cve20203602-priv-esc(189490)

Source: CCN
Type: Cisco Security Advisory cisco-sa-staros-privilege-esc-pyb7YTd
Cisco StarOS Privilege Escalation Vulnerability

Source: CISCO
Type: Vendor Advisory
20201007 Cisco StarOS Privilege Escalation Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/o:cisco:staros:*:*:*:*:*:*:*:* (Version < 21.19.n4)
  • AND
  • cpe:/h:cisco:asr_5500:-:*:*:*:*:*:*:*
  • OR cpe:/h:cisco:asr_5700:-:*:*:*:*:*:*:*

  • Configuration CCN 1:
  • cpe:/o:cisco:staros:*:*:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    BACK
    cisco staros *
    cisco asr 5500 -
    cisco asr 5700 -
    cisco staros *