Vulnerability Name:

CVE-2020-3222 (CCN-182890)

Assigned:2019-12-12
Published:2020-06-03
Updated:2021-09-22
Summary:A vulnerability in the web-based user interface (web UI) of Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to bypass access control restrictions on an affected device. The vulnerability is due to the presence of a proxy service at a specific endpoint of the web UI. An attacker could exploit this vulnerability by connecting to the proxy service. An exploit could allow the attacker to bypass access restrictions on the network by proxying their access request through the management network of the affected device. As the proxy is reached over the management virtual routing and forwarding (VRF), this could reduce the effectiveness of the bypass.
CVSS v3 Severity:4.3 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
3.8 Low (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
4.3 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
3.8 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:3.3 Low (CVSS v2 Vector: AV:A/AC:L/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
3.3 Low (CCN CVSS v2 Vector: AV:A/AC:L/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-Other
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2020-3222

Source: XF
Type: UNKNOWN
cisco-cve20203222-sec-bypass(182890)

Source: CCN
Type: Cisco Security Advisory cisco-sa-webui-unauthprxy-KXXsbWh
Cisco IOS XE Software Web UI Unauthenticated Proxy Service Vulnerability

Source: CISCO
Type: Patch, Vendor Advisory
20200603 Cisco IOS XE Software Web UI Unauthenticated Proxy Service Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/o:cisco:ios_xe:16.10.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.10.1a:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.10.1b:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.10.1c:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.10.1d:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.10.1e:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.10.1f:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.10.1g:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.10.1s:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.10.2:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.11.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.11.1a:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.11.1b:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.11.1c:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.11.1s:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.12.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.12.1a:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.12.1c:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.12.1s:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.12.1t:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.12.1w:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.12.1y:*:*:*:*:*:*:*

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

    • * Denotes that component is vulnerable
    BACK
    cisco ios xe 16.10.1
    cisco ios xe 16.10.1a
    cisco ios xe 16.10.1b
    cisco ios xe 16.10.1c
    cisco ios xe 16.10.1d
    cisco ios xe 16.10.1e
    cisco ios xe 16.10.1f
    cisco ios xe 16.10.1g
    cisco ios xe 16.10.1s
    cisco ios xe 16.10.2
    cisco ios xe 16.11.1
    cisco ios xe 16.11.1a
    cisco ios xe 16.11.1b
    cisco ios xe 16.11.1c
    cisco ios xe 16.11.1s
    cisco ios xe 16.12.1
    cisco ios xe 16.12.1a
    cisco ios xe 16.12.1c
    cisco ios xe 16.12.1s
    cisco ios xe 16.12.1t
    cisco ios xe 16.12.1w
    cisco ios xe 16.12.1y
    cisco ios xe software *