GHSA-rvp4-r3g6-8hxq

Source

https://github.com/advisories/GHSA-rvp4-r3g6-8hxq

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/06/GHSA-rvp4-r3g6-8hxq/GHSA-rvp4-r3g6-8hxq.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-rvp4-r3g6-8hxq

Aliases

CVE-2022-26850

Published

2022-06-20T22:33:41Z

Modified

2024-02-16T07:57:06.649718Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N CVSS Calculator

Summary

Insufficiently Protected Credentials via Insecure Temporary File in org.apache.nifi:nifi-single-user-utils

Details

Impact

org.apache.nifi.authentication.single.user.writer.StandardLoginCredentialsWriter contains a local information disclosure vulnerability due to writing credentials (username and password) to a file that is readable by all other users on unix-like systems. On unix-like systems, the system's temporary directory is shared between all users on that system. As such, files written to that directory without setting the correct file permissions can allow other users on that system to view the contents of the files written to those temporary files.

Source

An insecure temporary file is created here: - https://github.com/apache/nifi/blob/6a1c7c72d5b91b9ce5d5cb5b86e3155d21e2c19b/nifi-commons/nifi-single-user-utils/src/main/java/org/apache/nifi/authentication/single/user/writer/StandardLoginCredentialsWriter.java#L75

The username and password credentials are written to this file here: - https://github.com/apache/nifi/blob/6a1c7c72d5b91b9ce5d5cb5b86e3155d21e2c19b/nifi-commons/nifi-single-user-utils/src/main/java/org/apache/nifi/authentication/single/user/writer/StandardLoginCredentialsWriter.java#L85-L95

Patches

The vulnerability has been patched in version 1.16.

Prerequisites

This vulnerability impacts Unix-like systems, and very old versions of Mac OSX and Windows as they all share the system temporary directory between all users.

Workarounds

Setting the java.io.tmpdir system environment variable to a directory that is exclusively owned by the executing user will fix this vulnerability for all operating systems.

References

https://issues.apache.org/jira/browse/NIFI-9785
https://github.com/apache/nifi/commit/859d5fe
https://github.com/apache/nifi/pull/5856
https://nifi.apache.org/security.html#CVE-2022-26850
https://twitter.com/JLLeitschuh/status/1511736635645435904?s=20&t=I3w3zF6Y2DUvWYsEFqERjg

Database specific

{
    "nvd_published_at": "2022-04-06T18:15:00Z",
    "cwe_ids": [
        "CWE-522"
    ],
    "severity": "MODERATE",
    "github_reviewed": true,
    "github_reviewed_at": "2022-06-20T22:33:41Z"
}

References

Affected packages

Maven / org.apache.nifi:nifi-single-user-utils

Package

Name: org.apache.nifi:nifi-single-user-utils; View open source insights on deps.dev
Purl: pkg:maven/org.apache.nifi/nifi-single-user-utils

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.16

Affected versions

1.*

1.14.0

1.15.0

1.15.1

1.15.2

1.15.3

Database specific

{
    "last_known_affected_version_range": "<= 1.15.3"
}