Vulnerability · Published May 5, 2022 · Assigned by icscert
CVE-2021-38443Eclipse CycloneDDS Improper Handling of Syntactically Invalid Structure
Medium 6.6
In plain English
A medium-severity security flaw in CycloneDDS from Eclipse. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 2.1% (higher than 82% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)6.6Medium
Exploit odds (30 days)2.1%top 18.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Eclipse CycloneDDS versions prior to 0.8.0 improperly handle invalid structures, which may allow an attacker to write arbitrary values in the XML parser.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | cyclonedds | 0.8.1-2 | DEBIAN-CVE-2021-38443 |
| Debian:13 | cyclonedds | 0.8.1-2 | DEBIAN-CVE-2021-38443 |
| Debian:14 | cyclonedds | 0.8.1-2 | DEBIAN-CVE-2021-38443 |
| Ubuntu:22.04:LTS | cyclonedds | no fix listed | UBUNTU-CVE-2021-38443 |
| Ubuntu:24.04:LTS | cyclonedds | no fix listed | UBUNTU-CVE-2021-38443 |
| Ubuntu:25.10 | cyclonedds | no fix listed | UBUNTU-CVE-2021-38443 |
| Ubuntu:26.04:LTS | cyclonedds | no fix listed | UBUNTU-CVE-2021-38443 |
| Ubuntu:26.10 | cyclonedds | no fix listed | UBUNTU-CVE-2021-38443 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Eclipse | CycloneDDS | unspecified – before 0.8.0 |
Weakness: CWE-228 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:H
References
- https://www.cisa.gov/uscert/ics/advisories/icsa-21-315-02 x_refsource_CONFIRM
- https://projects.eclipse.org/projects/iot.cyclonedds x_refsource_CONFIRM