Vulnerability Name:

CVE-2018-0940

Assigned:2017-12-01
Published:2018-03-13
Updated:2018-04-11
Summary:Microsoft Exchange Outlook Web Access (OWA) in Microsoft Exchange Server 2010 Service Pack 3 Update Rollup 20, Microsoft Exchange Server 2013 Cumulative Update 18, Microsoft Exchange Server 2013 Cumulative Update 19, Microsoft Exchange Server 2013 Service Pack 1, Microsoft Exchange Server 2016 Cumulative Update 7, and Microsoft Exchange Server 2016 Cumulative Update 8 allows an elevation of privilege vulnerability due to how links in the body of an email message are rewritten, aka "Microsoft Exchange Elevation of Privilege Vulnerability".
CVSS v3 Severity:6.5 Medium (CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N)
5.7 Medium (Temporal CVSS v3 Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): High
Integrity (I): None
Availibility (A): None
4.4 Medium (CCN CVSS v3 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N)
3.9 Low (CCN Temporal CVSS v3 Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/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): Low
Integrity (I): Low
Availibility (A): None
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): Partial
Integrity (I): None
Availibility (A): None
3.2 Low (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:P/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): Partial
Integrity (I): Partial
Availibility (A): None
Vulnerability Type:CWE-200
References:Source: BID
Type: VENDOR_ADVISORY
103323

Source: SECTRACK
Type: VENDOR_ADVISORY
1040521

Source: XF
Type: UNKNOWN
ms-owa-cve20180940-priv-esc(139652)

Source: CONFIRM
Type: VENDOR_ADVISORY
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-0940

Vulnerable Configuration:Configuration 1:
  • cpe:/a:microsoft:exchange_server:2010:sp3:*:*:*:*:*:*
  • OR cpe:/a:microsoft:exchange_server:2013:cumulative_update_18:*:*:*:*:*:*
  • OR cpe:/a:microsoft:exchange_server:2013:cumulative_update_19:*:*:*:*:*:*
  • OR cpe:/a:microsoft:exchange_server:2013:sp1:*:*:*:*:*:*
  • OR cpe:/a:microsoft:exchange_server:2016:cumulative_update_7:*:*:*:*:*:*
  • OR cpe:/a:microsoft:exchange_server:2016:cumulative_update_8:*:*:*:*:*:*

  • Configuration CCN 1:
  • cpe:/a:microsoft:exchange_server:2013:sp1:*:*:*:*:*:*
  • OR cpe:/a:microsoft:exchange_server:2013:*:CU19:*:*:*:*:*
  • OR cpe:/a:microsoft:exchange_server:2016:*:CU8:*:*:*:*:*

  • Denotes that component is vulnerable
    BACK
    microsoft exchange server 2010 sp3
    microsoft exchange server 2013 cumulative_update_18
    microsoft exchange server 2013 cumulative_update_19
    microsoft exchange server 2013 sp1
    microsoft exchange server 2016 cumulative_update_7
    microsoft exchange server 2016 cumulative_update_8
    microsoft exchange server 2013 sp1
    microsoft exchange server 2013
    microsoft exchange server 2016