Microsoft Exchange DagNetMultiValuedProperty Exposed Dangerous Function Remote Code Execution Vulnerability

November 22nd, 2022
ZDI-22-1654 ZDI-CAN-18986

CVE ID

CVE-2022-41082

CVSS Score

8.8 AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected Vendors

Microsoft

Affected Products

Exchange

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Microsoft Exchange. Authentication is required to exploit this vulnerability.

The specific flaw exists within the DagNetMultiValuedProperty class. The issue results from the exposure of a dangerous function. An attacker can leverage this vulnerability to execute code in the context of SYSTEM.

Additional Details

Microsoft has issued an update to correct this vulnerability. More details can be found at:
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-41082

Disclosure Timeline

  • 2022-09-29 - Vulnerability reported to vendor
  • 2022-11-22 - Coordinated public release of advisory

Credit

Piotr Bazydlo (@chudypb) of Trend Micro Zero Day Initiative

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