Vulnerability Name:

CVE-2021-1517 (CCN-202890)

Assigned:2020-11-13
Published:2021-06-02
Updated:2021-06-15
Summary:A vulnerability in the multimedia viewer feature of Cisco Webex Meetings and Cisco Webex Meetings Server could allow an authenticated, remote attacker to bypass security protections. This vulnerability is due to unsafe handling of shared content within the multimedia viewer feature. An attacker could exploit this vulnerability by sharing a file through the multimedia viewer feature. A successful exploit could allow the attacker to bypass security protections and prevent warning dialogs from appearing before files are offered to other users.
CVSS v3 Severity:4.3 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N)
3.8 Low (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/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): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
5.0 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:N)
4.4 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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): None
Scope:Scope (S): Changed
Impact Metrics:Confidentiality (C): None
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:4.0 Medium (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
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-693
Vulnerability Consequences:Bypass Security
References:Source: MITRE
Type: CNA
CVE-2021-1517

Source: XF
Type: UNKNOWN
cisco-cve20211517-sec-bypass(202890)

Source: CCN
Type: Cisco Security Advisory cisco-sa-webex-multimedia-26DpqVRO
Cisco Webex Meetings and Webex Meetings Server Multimedia Sharing Security Bypass Vulnerability

Source: CISCO
Type: Vendor Advisory
20210602 Cisco Webex Meetings and Webex Meetings Server Multimedia Sharing Security Bypass Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/a:cisco:webex_meetings_online:41.3.5:*:*:*:*:*:*:*
  • OR 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:3.0:maintenance_release1:*:*:*:*:*:*
  • OR cpe:/a:cisco:webex_meetings_server:3.0:maintenance_release2:*:*:*:*:*:*
  • OR cpe:/a:cisco:webex_meetings_server:3.0:maintenance_release3:*:*:*:*:*:*
  • 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:*:*:*:*:*:*
  • OR cpe:/a:cisco:webex_meetings_server:4.0:maintenance_release3_security_patch3:*:*:*:*:*:*
  • OR cpe:/a:cisco:webex_meetings_server:4.0:maintenance_release3_security_patch4:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:cisco:webex_meetings_server:3.0:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:webex_meetings:-:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco webex meetings online 41.3.5
    cisco webex meetings server *
    cisco webex meetings server 3.0 -
    cisco webex meetings server 3.0 maintenance_release1
    cisco webex meetings server 3.0 maintenance_release2
    cisco webex meetings server 3.0 maintenance_release3
    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
    cisco webex meetings server 4.0 maintenance_release3_security_patch3
    cisco webex meetings server 4.0 maintenance_release3_security_patch4
    cisco webex meetings server 3.0
    cisco webex meetings -