CVE-2021-21331: DataDog API Client contains a Local Information Disclosure Vulnerability
First published: Wed Mar 03 2021(Updated: )
The Java client for the Datadog API before version 1.0.0-beta.9 has a local information disclosure of sensitive information downloaded via the API using the API Client. The Datadog API is executed on a unix-like system with multiple users. The API is used to download a file containing sensitive information. This sensitive information is exposed locally to other users. This vulnerability exists in the API Client for version 1 and 2. The method `prepareDownloadFilecreates` creates a temporary file with the permissions bits of `-rw-r--r--` on unix-like systems. On unix-like systems, the system temporary directory is shared between users. As such, the contents of the file downloaded via the `downloadFileFromResponse` method will be visible to all other users on the local system. Analysis of the finding determined that the affected code was unused, meaning that the exploitation likelihood is low. The unused code has been removed, effectively mitigating this issue. This issue has been patched in version 1.0.0-beta.9. As a workaround one may specify `java.io.tmpdir` when starting the JVM with the flag `-Djava.io.tmpdir`, specifying a path to a directory with `drw-------` permissions owned by `dd-agent`.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| =1.0.0-beta1 | ||
| =1.0.0-beta2 | ||
| =1.0.0-beta3 | ||
| =1.0.0-beta4 | ||
| =1.0.0-beta5 | ||
| =1.0.0-beta6 | ||
| =1.0.0-beta7 | ||
| =1.0.0-beta8 |
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Reference Links
Frequently Asked Questions
What is CVE-2021-21331?
CVE-2021-21331 is a vulnerability in the Java client for the Datadog API before version 1.0.0-beta.9 that allows local information disclosure of sensitive information downloaded via the API.
What is the severity of CVE-2021-21331?
The severity of CVE-2021-21331 is medium with a CVSS score of 3.3.
Which software versions are affected by CVE-2021-21331?
The Java client for the Datadog API versions 1.0.0-beta1 to 1.0.0-beta8 are affected by CVE-2021-21331.
How can I fix CVE-2021-21331?
To fix CVE-2021-21331, you should update to version 1.0.0-beta.9 of the Datadog API client for Java.
Are there any references for CVE-2021-21331?
Yes, you can find more information about CVE-2021-21331 and the fix in the release notes and security advisory provided by Datadog: [Release Notes](https://github.com/DataDog/datadog-api-client-java/releases/tag/datadog-api-client-1.0.0-beta.9) and [Security Advisory](https://github.com/DataDog/datadog-api-client-java/security/advisories/GHSA-2cxf-6567-7pp6).
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