Local Information Disclosure Vulnerability

CVE-2021-21331 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

Impact

Local information disclosure of sensitive information downloaded via the API using the API Client.

Finding

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 vulnerability was found due to this query that Jonathan Leitschuh contributed to the Semmle QL project.

Patches

This issue has been patched in version 1.0.0-beta.9.

See also Remove unused downloadFile helpers.

Workarounds

The recommended workaround is to 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.

References

For more information

If you have any questions or comments about this advisory:
* Open an issue in DataDog/datadog-api-client-java
* Email us at [email protected]

Basic information

Type
reviewed
Severity
low
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Not specified
Published (advisory)
2021-03-03 23:01:17 UTC
Updated
2023-01-31 19:22:33 UTC
GitHub reviewed
2021-03-03 22:58:04 UTC
NVD published
2021-03-03 23:15:00 UTC

EPSS Score

Score Percentile
0.12% 31.78%

CVSS Scores

Base score Version Severity Vector
3.0 3.1 —
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:L)
A normal user session is enough; they don’t have to be admin.
User interaction (UI:R)
A real person has to do something—click, install, enable—otherwise it doesn’t land.
Scope (S:C)
Breaking this can reach past the original component and bite other resources—bigger blast radius.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.

Identifiers

Type Value
GHSA GHSA-2cxf-6567-7pp6 ↗
CVE CVE-2021-21331 ↗

CWEs

CWE id Name
CWE-378 Creation of Temporary File With Insecure Permissions
CWE-379 Creation of Temporary File in Directory with Insecure Permissions

Credits

  • JLLeitschuh (analyst)
  • oliverchang (analyst)

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
maven com.datadoghq:datadog-api-client >= 1.0.0-beta.6, < 1.0.0-beta.9 1.0.0-beta.9 —

References

cvelogic Threat Intelligence