CyberSecBulletin
CVE-2022-41033Exploited in the wildNVD status: Analyzed

Microsoft Windows COM+ Event System Service Privilege Escalation

Published Updated By the CyberSecBulletin desk

CVE-2022-41033 is a high-severity access of resource using incompatible type vulnerability in Windows 10 Version 1809 from Microsoft, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. The record lists version 10.0.17763.3532 as the first without the flaw, so updating Windows 10 Version 1809 to that release or later removes the exposure. CISA added it to the Known Exploited Vulnerabilities catalogue on October 11, 2022, which means attacks have been observed in the wild.

Patch now

Attackers are already exploiting this vulnerability, according to CISA.

What to do

  1. Update Windows 10 Version 1809 to 10.0.17763.3532 or a later version.
  2. Update Windows Server 2019 to 10.0.17763.3532 or a later version.
  3. Update Windows Server 2019 (Server Core installation) to 10.0.17763.3532 or a later version.
  4. CISA's required action: Apply updates per vendor instructions.
  5. Read the advisory on msrc.microsoft.com for workarounds and exact fixed builds.

Affected products and versions

VendorProductAffected versionsFixed in
MicrosoftWindows 10 Version 180910.0.17763.0 up to, but not including, 10.0.17763.3532; 10.0.0 up to, but not including, 10.0.17763.353210.0.17763.3532
MicrosoftWindows Server 201910.0.17763.0 up to, but not including, 10.0.17763.353210.0.17763.3532
MicrosoftWindows Server 2019 (Server Core installation)10.0.17763.0 up to, but not including, 10.0.17763.353210.0.17763.3532
MicrosoftWindows 10 Version 21H110.0.0 up to, but not including, 10.0.19043.213010.0.19043.2130
MicrosoftWindows Server 202210.0.20348.0 up to, but not including, 10.0.20348.112910.0.20348.1129
MicrosoftWindows 10 Version 20H210.0.0 up to, but not including, 10.0.19042.213010.0.19042.2130
MicrosoftWindows 11 version 21H210.0.0 up to, but not including, 10.0.22000.109810.0.22000.1098
MicrosoftWindows 10 Version 21H210.0.19043.0 up to, but not including, 10.0.19044.213010.0.19044.2130
MicrosoftWindows 11 version 22H210.0.22621.0 up to, but not including, 10.0.22621.67410.0.22621.674
MicrosoftWindows 10 Version 150710.0.10240.0 up to, but not including, 10.0.10240.1950710.0.10240.19507
MicrosoftWindows 10 Version 160710.0.14393.0 up to, but not including, 10.0.14393.542710.0.14393.5427
MicrosoftWindows Server 201610.0.14393.0 up to, but not including, 10.0.14393.542710.0.14393.5427
MicrosoftWindows Server 2016 (Server Core installation)10.0.14393.0 up to, but not including, 10.0.14393.542710.0.14393.5427
MicrosoftWindows 76.1.0 up to, but not including, 6.1.7601.261746.1.7601.26174
MicrosoftWindows 7 Service Pack 16.1.0 up to, but not including, 6.1.7601.261746.1.7601.26174
MicrosoftWindows 8.16.3.0 up to, but not including, 6.3.9600.206256.3.9600.20625
MicrosoftWindows Server 2008 Service Pack 26.0.6003.0 up to, but not including, 6.0.6003.217216.0.6003.21721
MicrosoftWindows Server 2008 Service Pack 2 (Server Core installation)6.0.6003.0 up to, but not including, 6.0.6003.217216.0.6003.21721
MicrosoftWindows Server 2008 R2 Service Pack 16.1.7601.0 up to, but not including, 6.1.7601.261746.1.7601.26174
MicrosoftWindows Server 2008 R2 Service Pack 1 (Server Core installation)6.1.7601.0 up to, but not including, 6.1.7601.261746.1.7601.26174
MicrosoftWindows Server 20126.2.9200.0 up to, but not including, 6.2.9200.239206.2.9200.23920
MicrosoftWindows Server 2012 (Server Core installation)6.2.9200.0 up to, but not including, 6.2.9200.239206.2.9200.23920
MicrosoftWindows Server 2012 R26.3.9600.0 up to, but not including, 6.3.9600.206256.3.9600.20625
MicrosoftWindows Server 2012 R2 (Server Core installation)6.3.9600.0 up to, but not including, 6.3.9600.206256.3.9600.20625
MicrosoftWindows 10 1507before 10.0.10240.1950710.0.10240.19507

Version data comes from the organisation that assigned the CVE; 9 further products are omitted here. Confirm against the vendor advisory before deciding you are unaffected.

How the severity score breaks down

Attack vector
LocalThe attacker needs local access or must trick a user into running something.
Attack complexity
LowNo special conditions are needed; the attack works reliably.
Privileges required
LowA basic user account is enough.
User interaction
NoneNo action by a victim is required.
Scope
UnchangedImpact stays within the vulnerable component.
Confidentiality
HighAll data handled by the component can be read.
Integrity
HighData or code can be modified at will.
Availability
HighThe component can be taken down completely.

Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by CNA (microsoft.com).

Official description

Windows COM+ Event System Service Elevation of Privilege Vulnerability

Source: the CVE record as published by its numbering authority, via NVD and CVE.org.

The underlying weakness: Access of Resource Using Incompatible Type

The product allocates or initializes a resource such as a pointer, object, or variable using one type, but it later accesses that resource using a type that is incompatible with the original type.

More Access of Resource Using Incompatible Type vulnerabilities (CWE-843)

Timeline

  1. CVE record published.
  2. Added to CISA's Known Exploited Vulnerabilities catalogue.
  3. Deadline for US federal agencies to remediate, set by CISA.
  4. CISA published its SSVC assessment (exploitation: active, automatable: no, technical impact: total).
  5. Record last changed materially (score, affected products, status or references).

References

Third-party and government advisories

Recent Access of Resource Using Incompatible Type vulnerabilities

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