CVE-2020-12852: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-jp5w-2f3c-7r7m
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Advisory Summary

CVE-2020-12852 is a HIGH security vulnerability vulnerability (General Security Weakness) affecting Software libraries in the Maven ecosystem. Remediation is available in the latest vendor maintenance releases.

CVE-2020-12852 at a Glance

CVE Identifier CVE-2020-12852
GHSA Identifier GHSA-jp5w-2f3c-7r7m
Severity HIGH
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-2020-12852

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-2020-12852, 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

The update feature for Pydio Cells 2.0.4 allows an administrator user to set a custom update URL and the public RSA key used to validate the downloaded update package. The update process involves downloading the updated binary file from a URL indicated in the update server response, validating its checksum and signature with the provided public key and finally replacing the current application binary. To complete the update process, the application’s service or appliance needs to be restarted. An attacker with administrator access can leverage the software update feature to force the application to download a custom binary that will replace current Pydio Cells binary. When the server or service is eventually restarted the attacker will be able to execute code under the privileges of the user running the application. In the Pydio Cells enterprise appliance this is with the privileges of the user named “pydio”.

References

NVD — CVE-2020-12852 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-12852
Software Security Information SECURITY
https://www.coresecurity.com/advisories
Software Security Information SECURITY
https://www.coresecurity.com/core-labs/advisories/pydio-cells-204-multiple-vulnerabilities
Software Security Information SECURITY
http://packetstormsecurity.com/files/158002/Pydio-Cells-2.0.4-XSS-File-Write-Code-Execution.html

Frequently Asked Questions

What is CVE-2020-12852?
CVE-2020-12852 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-2020-12852?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2020-12852?
CVE-2020-12852 is classified under General Security Weakness.
How can I check Maven dependencies for CVE-2020-12852?
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 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-jp5w-2f3c-7r7m",
  "modified" : "2022-05-24T22:28:45Z",
  "published" : "2022-05-24T22:28:45Z",
  "aliases" : [ "CVE-2020-12852" ],
  "details" : "The update feature for Pydio Cells 2.0.4 allows an administrator user to set a custom update URL and the public RSA key used to validate the downloaded update package. The update process involves downloading the updated binary file from a URL indicated in the update server response, validating its checksum and signature with the provided public key and finally replacing the current application binary. To complete the update process, the application’s service or appliance needs to be restarted. An attacker with administrator access can leverage the software update feature to force the application to download a custom binary that will replace current Pydio Cells binary. When the server or service is eventually restarted the attacker will be able to execute code under the privileges of the user running the application. In the Pydio Cells enterprise appliance this is with the privileges of the user named “pydio”.",
  "severity" : [ ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-12852"
  }, {
    "type" : "WEB",
    "url" : "https://www.coresecurity.com/advisories"
  }, {
    "type" : "WEB",
    "url" : "https://www.coresecurity.com/core-labs/advisories/pydio-cells-204-multiple-vulnerabilities"
  }, {
    "type" : "WEB",
    "url" : "http://packetstormsecurity.com/files/158002/Pydio-Cells-2.0.4-XSS-File-Write-Code-Execution.html"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2020-06-04T20:15:00Z"
  }
}