CVE-2022-28820: Acs aem commons Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-w5m2-299g-rff5
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CVSS 6.1
CWE-79
Published
Advisory Summary

CVE-2022-28820 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Acs aem commons libraries in the Maven ecosystem. The issue involves page compare reflected cross-site scripting (xss) vulnerability. Remediation is available by upgrading affected packages to version 5.2.0.

CVE-2022-28820 at a Glance

CVE Identifier CVE-2022-28820
GHSA Identifier GHSA-w5m2-299g-rff5
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Acs aem commons
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 6.1

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

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

How to Fix CVE-2022-28820

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

com.adobe.acs:acs-aem-commons fixed: 5.2.0 
<dependency>
    <groupId>com.adobe.acs</groupId>
    <artifactId>acs-aem-commons</artifactId>
    <version>5.2.0</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=com.adobe.acs

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2022-28820, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=com.adobe.acs

Analyze the terminal output to locate any version of Acs aem commons in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 5.2.0), your application is affected.

Note: The mvn dependency:tree -Dincludes=com.adobe.acs 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-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'), where the product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. In Acs aem commons, 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

### Impact ACS Commons version 5.1.x (and earlier) suffers from a Reflected Cross-site Scripting (XSS) vulnerability in `/apps/acs-commons/content/page-compare.html` endpoint via the `a` and `b` GET parameters. User input submitted via these parameters is not validated or sanitized. An attacker must provide a link to someone with access to AEM Author, and could potentially exploit this vulnerability to inject malicious JavaScript content into vulnerable form fields and execute it within the context of the victim's browser. The exploitation of this issue requires user interaction in order to be successful. ### Patches This issue has been resolved in 5.2.0. ### Workarounds None ### References N/A ### For more information If you have any questions or comments about this advisory open an issue in acs-aem-commons. ### Credit This issue was discovered and reported by Black Lantern Security. https://hackerone.com/reports/1466020

CVE-2022-28820 Affected Acs aem commons Versions

1 component(s)
Fixed Versions:
5.2.0
Product / Package Ecosystem Affected Versions Fixed Version
com.adobe.acs:acs-aem-commons
maven/com.adobe.acs/acs-aem-commons
Maven
< 5.2.0
5.2.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/Adobe-Consulting-Services/acs-aem-commons/security/advisories/GHSA-w5m2-299g-rff5
NVD — CVE-2022-28820 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-28820
Acs aem commons Source Repository REPOSITORY
https://github.com/Adobe-Consulting-Services/acs-aem-commons

Frequently Asked Questions

What is CVE-2022-28820?
CVE-2022-28820 is a security vulnerability in Acs aem commons involving Page Compare Reflected Cross-site Scripting (XSS) vulnerability under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Acs aem commons versions are affected?
Affected versions include releases prior to 5.2.0 across affected packages: com.adobe.acs:acs-aem-commons.
What version fixes CVE-2022-28820?
Upgrading to 5.2.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is acs-aem-commons affected?
Yes, com.adobe.acs:acs-aem-commons is affected in releases prior to 5.2.0. Upgrade your dependency to 5.2.0 or later.
What is the CVSS score of CVE-2022-28820?
CVE-2022-28820 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2022-28820?
CVE-2022-28820 is classified under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') (The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.).
How can I check Maven dependencies for CVE-2022-28820?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=com.adobe.acs'. 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-w5m2-299g-rff5",
  "modified" : "2022-04-26T12:59:00Z",
  "published" : "2022-04-26T12:59:00Z",
  "aliases" : [ "CVE-2022-28820" ],
  "summary" : "Page Compare Reflected Cross-site Scripting (XSS) vulnerability",
  "details" : "### Impact\n\nACS Commons version 5.1.x (and earlier) suffers from a Reflected Cross-site Scripting (XSS) vulnerability in `/apps/acs-commons/content/page-compare.html` endpoint via the `a` and `b` GET parameters. User input submitted via these parameters is not validated or sanitized.\n\nAn attacker must provide a link to someone with access to AEM Author, and could potentially exploit this vulnerability to inject malicious JavaScript content into vulnerable form fields and execute it within the context of the victim's browser. The exploitation of this issue requires user interaction in order to be successful.\n\n### Patches\n\nThis issue has been resolved in 5.2.0.\n\n### Workarounds\n\nNone \n\n### References\n\nN/A\n\n### For more information\n\nIf you have any questions or comments about this advisory open an issue in acs-aem-commons.\n\n### Credit\n\nThis issue was discovered and reported by Black Lantern Security.\n\nhttps://hackerone.com/reports/1466020",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "com.adobe.acs:acs-aem-commons"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "5.2.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/Adobe-Consulting-Services/acs-aem-commons/security/advisories/GHSA-w5m2-299g-rff5"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-28820"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/Adobe-Consulting-Services/acs-aem-commons"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-04-26T12:59:00Z",
    "nvd_published_at" : "2022-04-21T19:15:00Z"
  }
}