Local code execution via XML parser overflow
Published May 5, 2022 · Updated Apr 16, 2025
Stack-based buffer overflow in Real-Time Innovations RTI Connext DDS Professional and Connext DDS Secure 4.2x through 6.1.0 allows local attackers to execute arbitrary code. The XML document parser writes beyond a stack buffer when processing a malicious configuration document, corrupting process memory. Exploitation requires the attacker to alter a Connext configuration file on the same host; successful code runs with the Connext application's privileges and can crash the process.
Summary
What happened
Stack-based buffer overflow in Real-Time Innovations RTI Connext DDS Professional and Connext DDS Secure 4.2x through 6.1.0 allows local attackers to execute arbitrary code. The XML document parser writes beyond a stack buffer when processing a malicious configuration document, corrupting process memory. Exploitation requires the attacker to alter a Connext configuration file on the same host; successful code runs with the Connext application's privileges and can crash the process.
The record
- CVE
- CVE-2021-38433
- Published
- May 5, 2022
- Updated
- Apr 16, 2025
- Vendor
- Real-Time Innovations
- Product
- RTI Connext DDS Professional
- Classifications
- CWE-121, T1203
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- May 5, 2022CVE publishedPublication date reported by the CVE source.
- Apr 16, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=4.2x <=6.1.0
What conditions does exploitation require?
What is affected?
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
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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