CVE-2020-22755: Ms mcms MCMS Vulnerable To Arbitrary Code Vulnerability

HIGH
Advisory Identifier: GHSA-293v-5329-36wp
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CVSS 8.8
CWE-434
Published
Advisory Summary

CVE-2020-22755 is a HIGH (CVSS 8.8) mcms vulnerable to arbitrary code vulnerability (CWE-434: Unrestricted Upload of File with Dangerous Type) affecting Ms mcms libraries in the Maven ecosystem. The issue involves mcms vulnerable to arbitrary code execution via crafted thumbnail. Remediation is available in the latest vendor maintenance releases.

CVE-2020-22755 at a Glance

CVE Identifier CVE-2020-22755
GHSA Identifier GHSA-293v-5329-36wp
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-434: Unrestricted Upload of File with Dangerous Type
Affected Product Ms mcms
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 8.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2020-22755

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

net.mingsoft:ms-mcms fixed: Latest secure release 
<dependency>
    <groupId>net.mingsoft</groupId>
    <artifactId>ms-mcms</artifactId>
    <version>Latest secure release</version>
</dependency>
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 -Dincludes=net.mingsoft

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2020-22755, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=net.mingsoft

Analyze the terminal output to locate any version of Ms mcms 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 -Dincludes=net.mingsoft 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 CWE-434: Unrestricted Upload of File with Dangerous Type, where the product allows the upload or transfer of dangerous file types that are automatically processed within its environment. In Ms mcms, 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

File upload vulnerability in MCMS 5.0 allows attackers to execute arbitrary code via a crafted thumbnail. A different vulnerability than CVE-2022-31943.

CVE-2020-22755 Affected Ms mcms Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
net.mingsoft:ms-mcms
maven/net.mingsoft/ms-mcms
Maven
≤ 5.0.0

References

NVD — CVE-2020-22755 NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-22755
Ms mcms Source Repository REPOSITORY
https://github.com/ming-soft/MCMS/issues/42
Ms mcms Source Repository REPOSITORY
https://github.com/ming-soft/MCMS

Frequently Asked Questions

What is CVE-2020-22755?
CVE-2020-22755 is a security vulnerability in Ms mcms involving MCMS vulnerable to arbitrary code execution via crafted thumbnail under CWE-434: Unrestricted Upload of File with Dangerous Type.
Which Ms mcms versions are affected?
Affected versions include releases prior to current release patches across affected packages: net.mingsoft:ms-mcms.
What version fixes CVE-2020-22755?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is ms-mcms affected?
Yes, net.mingsoft:ms-mcms is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2020-22755?
CVE-2020-22755 has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2020-22755?
CVE-2020-22755 is classified under CWE-434: Unrestricted Upload of File with Dangerous Type (The product allows the upload or transfer of dangerous file types that are automatically processed within its environment.).
How can I check Maven dependencies for CVE-2020-22755?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=net.mingsoft'. 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-293v-5329-36wp",
  "modified" : "2023-05-15T13:42:38Z",
  "published" : "2023-05-08T15:30:18Z",
  "aliases" : [ "CVE-2020-22755" ],
  "summary" : "MCMS vulnerable to arbitrary code execution via crafted thumbnail",
  "details" : "File upload vulnerability in MCMS 5.0 allows attackers to execute arbitrary code via a crafted thumbnail. A different vulnerability than CVE-2022-31943.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "net.mingsoft:ms-mcms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "5.0.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2020-22755"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/ming-soft/MCMS/issues/42"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/ming-soft/MCMS"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-434" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-05-11T20:34:22Z",
    "nvd_published_at" : "2023-05-08T14:15:10Z"
  }
}