Unauthenticated memory disclosure via Message Queuing
Published Dec 15, 2021 · Updated Aug 4, 2024
Information disclosure in Microsoft Message Queuing on affected Windows versions allows remote attackers to read process memory via crafted network messages. The vulnerable MSMQ handling path can disclose initialized or uninitialized heap memory to a remote requester. No authentication or user interaction is required, and impact is limited to confidentiality without integrity or availability effects.
Summary
What happened
Information disclosure in Microsoft Message Queuing on affected Windows versions allows remote attackers to read process memory via crafted network messages. The vulnerable MSMQ handling path can disclose initialized or uninitialized heap memory to a remote requester. No authentication or user interaction is required, and impact is limited to confidentiality without integrity or availability effects.
The record
- CVE
- CVE-2021-43236
- Published
- Dec 15, 2021
- Updated
- Aug 4, 2024
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- T1046
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Dec 15, 2021CVE publishedPublication date reported by the CVE source.
- Aug 4, 2024Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.0 <10.0.10240.19145
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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