Vulnerability Name:

CVE-2021-1221 (CCN-196157)

Assigned:2020-11-13
Published:2021-02-03
Updated:2022-09-20
Summary:A vulnerability in the user interface of Cisco Webex Meetings and Cisco Webex Meetings Server Software could allow an authenticated, remote attacker to inject a hyperlink into a meeting invitation email. The vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by entering a URL into a field in the user interface. A successful exploit could allow the attacker to generate a Webex Meetings invitation email that contains a link to a destination of their choosing. Because this email is sent from a trusted source, the recipient may be more likely to click the link.
CVSS v3 Severity:4.1 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N)
3.6 Low (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): Required
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
4.1 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N)
3.6 Low (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:N/I:L/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): Required
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:3.5 Low (CVSS v2 Vector: AV:N/AC:M/Au:S/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
4.0 Medium (CCN CVSS v2 Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-74
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-1221

Source: XF
Type: UNKNOWN
cisco-cve20211221-spoofing(196157)

Source: CCN
Type: Cisco Security Advisory cisco-sa-wbx-linkinj-WWZpVqu9
Cisco Webex Meetings and Cisco Webex Meetings Server Software Hyperlink Injection Vulnerability

Source: CISCO
Type: Vendor Advisory
20210203 Cisco Webex Meetings and Cisco Webex Meetings Server Software Hyperlink Injection Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/a:cisco:webex_meetings_server:*:*:*:*:*:*:*:* (Version < 3.0)
  • OR cpe:/a:cisco:webex_meetings_server:3.0:-:*:*:*:*:*:*
  • OR cpe:/a:cisco:webex_meetings_server:4.0:-:*:*:*:*:*:*
  • OR cpe:/a:cisco:webex_meetings_server:3.0:maintenance_release3_security_patch4:*:*:*:*:*:*
  • OR cpe:/a:cisco:webex_meetings:*:*:*:*:*:*:*:* (Version < 41.1.0)
  • OR cpe:/a:cisco:webex_meetings_server:4.0:maintenance_release3_security_patch3:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:cisco:webex_meetings_server:-:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:webex_meetings:-:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco webex meetings server *
    cisco webex meetings server 3.0 -
    cisco webex meetings server 4.0 -
    cisco webex meetings server 3.0 maintenance_release3_security_patch4
    cisco webex meetings *
    cisco webex meetings server 4.0 maintenance_release3_security_patch3
    cisco webex meetings server -
    cisco webex meetings -