Vulnerability Name:

CVE-2020-3400 (CCN-188769)

Assigned:2019-12-12
Published:2020-09-24
Updated:2020-11-24
Summary:A vulnerability in the web UI feature of Cisco IOS XE Software could allow an authenticated, remote attacker to utilize parts of the web UI for which they are not authorized.The vulnerability is due to insufficient authorization of web UI access requests. An attacker could exploit this vulnerability by sending a crafted HTTP request to the web UI. A successful exploit could allow the attacker to utilize parts of the web UI for which they are not authorized. This could allow a Read-Only user to perform actions of an Admin user.
CVSS v3 Severity:8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
8.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
7.7 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:6.5 Medium (CVSS v2 Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
9.0 High (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-862
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2020-3400

Source: XF
Type: UNKNOWN
cisco-cve20203400-sec-bypass(188769)

Source: CCN
Type: Cisco Security Advisory cisco-sa-webui-auth-bypass-6j2BYUc7
Cisco IOS XE Software Web UI Authorization Bypass Vulnerability

Source: CISCO
Type: Vendor Advisory
20200924 Cisco IOS XE Software Web UI Authorization Bypass Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/o:cisco:ios_xe:16.2.2:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.3.1:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.3.1a:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.3.2:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.3.3:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.3.4:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.3.5:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.3.5b:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.3.6:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.3.7:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.3.8:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.3.9:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.3.10:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:16.3.11:*:*:*:*:*:*:*
  • OR cpe:/o:cisco:ios_xe:17.2.1t:*:*:*:*:*:*:*

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

    • * Denotes that component is vulnerable
    BACK
    cisco ios xe 16.2.2
    cisco ios xe 16.3.1
    cisco ios xe 16.3.1a
    cisco ios xe 16.3.2
    cisco ios xe 16.3.3
    cisco ios xe 16.3.4
    cisco ios xe 16.3.5
    cisco ios xe 16.3.5b
    cisco ios xe 16.3.6
    cisco ios xe 16.3.7
    cisco ios xe 16.3.8
    cisco ios xe 16.3.9
    cisco ios xe 16.3.10
    cisco ios xe 16.3.11
    cisco ios xe 17.2.1t
    cisco ios xe software *