Vulnerability Name:

CVE-2021-33768 (CCN-204600)

Assigned:2021-07-13
Published:2021-07-13
Updated:2022-05-03
Summary:Microsoft Exchange Server Elevation of Privilege Vulnerability This CVE ID is unique from CVE-2021-34470, CVE-2021-34523.
CVSS v3 Severity:8.0 High (CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
7.0 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/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): Adjacent
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
8.0 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H)
7.0 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:A/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): Adjacent
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:5.2 Medium (CVSS v2 Vector: AV:A/AC:L/Au:S/C:P/I:P/A:P)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Authentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): Partial
7.7 High (CCN CVSS v2 Vector: AV:A/AC:L/Au:S/C:C/I:C/A:C)
Exploitability Metrics:Access Vector (AV): Adjacent_Network
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Complete
Integrity (I): Complete
Availibility (A): Complete
Vulnerability Type:CWE-noinfo
Vulnerability Consequences:Gain Privileges
References:Source: MITRE
Type: CNA
CVE-2021-33768

Source: XF
Type: UNKNOWN
ms-exchange-cve202133768-priv-esc(204600)

Source: CCN
Type: Microsoft Security TechCenter - July 2021
Microsoft Exchange Server Elevation of Privilege Vulnerability

Source: MISC
Type: Patch, Vendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33768

Vulnerable Configuration:Configuration 1:
  • cpe:/a:microsoft:exchange_server:2016:cumulative_update_20:*:*:*:*:*:*
  • OR cpe:/a:microsoft:exchange_server:2019:cumulative_update_9:*:*:*:*:*:*
  • OR cpe:/a:microsoft:exchange_server:2016:cumulative_update_21:*:*:*:*:*:*
  • OR cpe:/a:microsoft:exchange_server:2019:cumulative_update_10:*:*:*:*:*:*

  • Configuration CCN 1:
  • cpe:/a:microsoft:exchange_server:2013:cumulative_update_23:*:*:*:*:*:*
  • OR cpe:/a:microsoft:exchange_server:2016:cumulative_update_20:*:*:*:*:*:*
  • OR cpe:/a:microsoft:exchange_server:2019:cumulative_update_9:*:*:*:*:*:*

  • * Denotes that component is vulnerable
    BACK
    microsoft exchange server 2016 cumulative_update_20
    microsoft exchange server 2019 cumulative_update_9
    microsoft exchange server 2016 cumulative_update_21
    microsoft exchange server 2019 cumulative_update_10
    microsoft exchange server 2013 cumulative_update_23
    microsoft exchange server 2016 cumulative_update_20
    microsoft exchange server 2019 cumulative_update_9