Vulnerability Name:

CVE-2021-1536 (CCN-202880)

Assigned:2020-11-13
Published:2021-06-02
Updated:2021-06-11
Summary:A vulnerability in Cisco Webex Meetings Desktop App for Windows, Cisco Webex Meetings Server, Cisco Webex Network Recording Player for Windows, and Cisco Webex Teams for Windows could allow an authenticated, local attacker to perform a DLL injection attack on an affected device. To exploit this vulnerability, the attacker must have valid credentials on the Windows system. This vulnerability is due to incorrect handling of directory paths at run time. An attacker could exploit this vulnerability by inserting a configuration file in a specific path in the system, which can cause a malicious DLL file to be loaded when the application starts. A successful exploit could allow the attacker to execute arbitrary code on the affected system with the privileges of another user account.
CVSS v3 Severity:7.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
6.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): High
Availibility (A): High
4.8 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L)
4.2 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): Low
Integrity (I): Low
Availibility (A): Low
CVSS v2 Severity:6.9 Medium (CVSS v2 Vector: AV:L/AC:M/Au:N/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
4.3 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
Vulnerability Type:CWE-427
Vulnerability Consequences:Gain Access
References:Source: MITRE
Type: CNA
CVE-2021-1536

Source: XF
Type: UNKNOWN
cisco-cve20211536-code-exec(202880)

Source: CCN
Type: Cisco Security Advisory cisco-sa-webex-dll-inject-XNmcSGTU
Cisco Webex Meetings, Webex Network Recording Player, and Webex Teams DLL Injection Vulnerability

Source: CISCO
Type: Vendor Advisory
20210602 Cisco Webex Meetings, Webex Network Recording Player, and Webex Teams DLL Injection Vulnerability

Vulnerable Configuration:Configuration 1:
  • cpe:/a:cisco:webex_meetings_desktop:-:*:*:*:*:windows:*:*
  • OR cpe:/a:cisco:webex_meetings_online:-:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:webex_meetings_server:4.0:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:webex_network_recording_player:-:*:*:*:*:windows:*:*
  • OR cpe:/a:cisco:webex_teams:3.0.15485.0:*:*:*:*:windows:*:*

    • Configuration CCN 1:
  • cpe:/a:cisco:webex_meetings_server:-:*:*:*:*:*:*:*
  • OR cpe:/a:cisco:webex_teams:*:*:*:*:*:windows:*:*
  • OR cpe:/a:cisco:webex_network_recording_player:*:*:*:*:*:windows:*:*

    • * Denotes that component is vulnerable
    BACK
    cisco webex meetings desktop -
    cisco webex meetings online -
    cisco webex meetings server 4.0
    cisco webex network recording player -
    cisco webex teams 3.0.15485.0
    cisco webex meetings server -
    cisco webex teams *
    cisco webex network recording player *