CVE-2021-29978: Software Security Vulnerability Vulnerability

CRITICAL
Advisory Identifier: GHSA-24c6-8h6m-mfm3
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Advisory Summary

CVE-2021-29978 is a CRITICAL security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2021-29978 at a Glance

CVE Identifier CVE-2021-29978
GHSA Identifier GHSA-24c6-8h6m-mfm3
Severity CRITICAL
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2021-29978

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2021-29978, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under General Security Weakness. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Multiple low security issues were discovered and fixed in a security audit of Mozilla VPN 2.x branch as part of a 3rd party security audit. This vulnerability affects Mozilla VPN < 2.3.

References

NVD — CVE-2021-29978 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-29978
Software Source Repository REPOSITORY
https://github.com/mozilla-mobile/mozilla-vpn-client/issues/797
Software Source Repository REPOSITORY
https://github.com/mozilla-mobile/mozilla-vpn-client/issues/798
Software Source Repository REPOSITORY
https://github.com/mozilla-mobile/mozilla-vpn-client/issues/799
Software Source Repository REPOSITORY
https://github.com/mozilla-mobile/mozilla-vpn-client/issues/800
Software Source Repository REPOSITORY
https://github.com/mozilla-mobile/mozilla-vpn-client/issues/801
Software Source Repository REPOSITORY
https://github.com/mozilla-mobile/mozilla-vpn-client/issues/803
Software Source Repository REPOSITORY
https://github.com/mozilla-mobile/mozilla-vpn-client/issues/804
Software Source Repository REPOSITORY
https://github.com/mozilla-mobile/mozilla-vpn-client/issues/805
Software Source Repository REPOSITORY
https://github.com/mozilla-mobile/mozilla-vpn-client/issues/806
Software Source Repository REPOSITORY
https://github.com/mozilla-mobile/mozilla-vpn-client/issues/808
Software Source Repository REPOSITORY
https://github.com/mozilla-mobile/mozilla-vpn-client/issues/809
Software Source Repository REPOSITORY
https://github.com/mozilla-mobile/mozilla-vpn-client/issues/810
Software Source Repository REPOSITORY
https://github.com/mozilla-mobile/mozilla-vpn-client/issues/812
Software Source Repository REPOSITORY
https://github.com/mozilla-mobile/mozilla-vpn-client/pull/816
Software Security Information SECURITY
https://www.mozilla.org/security/advisories/mfsa2021-31

Frequently Asked Questions

What is CVE-2021-29978?
CVE-2021-29978 is a security vulnerability in Software classified as a security vulnerability vulnerability under General Security Weakness.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2021-29978?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2021-29978?
CVE-2021-29978 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2021-29978?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
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  "id" : "GHSA-24c6-8h6m-mfm3",
  "modified" : "2022-05-24T19:10:11Z",
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  "aliases" : [ "CVE-2021-29978" ],
  "details" : "Multiple low security issues were discovered and fixed in a security audit of Mozilla VPN 2.x branch as part of a 3rd party security audit. This vulnerability affects Mozilla VPN < 2.3.",
  "severity" : [ ],
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}