Attacker Value
Moderate
(1 user assessed)
Exploitability
Moderate
(1 user assessed)
User Interaction
None
Privileges Required
None
Attack Vector
Network
1

CVE-2022-41080

Disclosure Date: November 09, 2022
Exploited in the Wild
Add MITRE ATT&CK tactics and techniques that apply to this CVE.

Description

Microsoft Exchange Server Elevation of Privilege Vulnerability. This CVE ID is unique from CVE-2022-41123.

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1
Ratings
Technical Analysis

This is an alternative method for bypassing Exchange Emergency Mitigation Service (EEMS) protections for the ProxyNotShell exploit chain. When this CVE is combined with CVE-2022-41082, they yield code execution as NT AUTHORITY\SYSTEM.

Installing the original patches from Microsoft that were released in November fix this exploit chain as well. The technique is arguably redundant when EEMS can be bypassed using various encoding techniques. This alternative vector is likely most valuable when used to avoid generating exploitation following the original pattern.

CVSS V3 Severity and Metrics
Base Score:
9.8 Critical
Impact Score:
5.9
Exploitability Score:
3.9
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector (AV):
Network
Attack Complexity (AC):
Low
Privileges Required (PR):
None
User Interaction (UI):
None
Scope (S):
Unchanged
Confidentiality (C):
High
Integrity (I):
High
Availability (A):
High

General Information

Vendors

  • microsoft

Products

  • exchange server 2013,
  • exchange server 2016,
  • exchange server 2019

Exploited in the Wild

Reported by:

Additional Info

Technical Analysis