CVE Vulnerabilities

CVE-2019-1373

Deserialization of Untrusted Data

Published: Nov 12, 2019 | Modified: Nov 21, 2024
CVSS 3.x
9.8
CRITICAL
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.x
7.5 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu

A remote code execution vulnerability exists in Microsoft Exchange through the deserialization of metadata via PowerShell, aka Microsoft Exchange Remote Code Execution Vulnerability.

Weakness

The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Affected Software

Name Vendor Start Version End Version
Exchange_server Microsoft 2013-cumulative_update_23 (including) 2013-cumulative_update_23 (including)
Exchange_server Microsoft 2016-cumulative_update_13 (including) 2016-cumulative_update_13 (including)
Exchange_server Microsoft 2016-cumulative_update_14 (including) 2016-cumulative_update_14 (including)
Exchange_server Microsoft 2019-cumulative_update_2 (including) 2019-cumulative_update_2 (including)
Exchange_server Microsoft 2019-cumulative_update_3 (including) 2019-cumulative_update_3 (including)

Potential Mitigations

  • Make fields transient to protect them from deserialization.
  • An attempt to serialize and then deserialize a class containing transient fields will result in NULLs where the transient data should be. This is an excellent way to prevent time, environment-based, or sensitive variables from being carried over and used improperly.

References