Arbitrary memory write via XML parser
Published May 5, 2022 · Updated Apr 16, 2025
Write-what-where condition in Eclipse CycloneDDS before 0.8.0 allows attackers to write arbitrary values through the XML parser. The vulnerable parser operation accepts crafted XML that can direct writes to attacker-chosen memory locations, rather than constraining destinations safely. Exploitation requires an application to process attacker-controlled XML with an affected library; successful writes can alter process state or cause a service interruption.
Summary
What happened
Write-what-where condition in Eclipse CycloneDDS before 0.8.0 allows attackers to write arbitrary values through the XML parser. The vulnerable parser operation accepts crafted XML that can direct writes to attacker-chosen memory locations, rather than constraining destinations safely. Exploitation requires an application to process attacker-controlled XML with an affected library; successful writes can alter process state or cause a service interruption.
The record
- CVE
- CVE-2021-38441
- Published
- May 5, 2022
- Updated
- Apr 16, 2025
- Vendor
- The Eclipse Foundation
- Product
- Eclipse Cyclone DDS
- Classifications
- CWE-123, T1203
- Attack vector
- network
- Privileges
- unauthenticated
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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=unspecified <0.8.0
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.
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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