Vulnerability Name:

CVE-2020-3361 (CCN-183591)

Assigned:2019-12-12
Published:2020-06-17
Updated:2020-06-24
Summary:A vulnerability in Cisco Webex Meetings and Cisco Webex Meetings Server could allow an unauthenticated, remote attacker to gain unauthorized access to a vulnerable Webex site. The vulnerability is due to improper handling of authentication tokens by a vulnerable Webex site. An attacker could exploit this vulnerability by sending crafted requests to a vulnerable Cisco Webex Meetings or Cisco Webex Meetings Server site. If successful, the attacker could gain the privileges of another user within the affected Webex site.
CVSS v3 Severity:9.8 Critical (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
8.5 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/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): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
8.1 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H)
7.1 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/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): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
CVSS v2 Severity:7.5 High (CVSS v2 Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
7.6 High (CCN CVSS v2 Vector: AV:N/AC:H/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Athentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-287
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2020-3361

Source: XF
Type: UNKNOWN
cisco-cve20203361-priv-esc(183591)

Source: CCN
Type: Cisco Security Advisory cisco-sa-webex-token-zPvEjKN
Cisco Webex Meetings and Cisco Webex Meetings Server Token Handling Unauthorized Access Vulnerability

Source: CISCO
Type: Vendor Advisory
20200617 Cisco Webex Meetings and Cisco Webex Meetings Server Token Handling Unauthorized Access Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/a:cisco:webex_meetings:*:*:*:*:*:*:*:* (Version <= 39.5.25)
  • OR cpe:/a:cisco:webex_meetings:*:*:*:*:*:*:*:* (Version >= 40.1.0 and <= 40.4.10)
  • OR cpe:/a:cisco:webex_meetings:40.6.0:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:webex_meetings_server:*:*:*:*:*:*:*:* (Version < 4.0)
  • OR cpe:/a:cisco:webex_meetings_server:4.0:-:*:*:*:*:*:*
  • OR cpe:/a:cisco:webex_meetings_server:4.0:maintenance_release1:*:*:*:*:*:*
  • OR cpe:/a:cisco:webex_meetings_server:4.0:maintenance_release2:*:*:*:*:*:*
  • OR cpe:/a:cisco:webex_meetings_server:4.0:maintenance_release3:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    BACK
    cisco webex meetings *
    cisco webex meetings *
    cisco webex meetings 40.6.0
    cisco webex meetings server *
    cisco webex meetings server 4.0 -
    cisco webex meetings server 4.0 maintenance_release1
    cisco webex meetings server 4.0 maintenance_release2
    cisco webex meetings server 4.0 maintenance_release3