CVE-2021-27676: Centreon/centreon Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-r5mf-q76q-f2xq
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CVSS 5.4
CWE-79
Published
Advisory Summary

CVE-2021-27676 is a MODERATE (CVSS 5.4) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Centreon/centreon libraries in the Packagist ecosystem. The issue involves cross-site scripting in centreon. Remediation is available by upgrading affected packages to version 20.10.7.

CVE-2021-27676 at a Glance

CVE Identifier CVE-2021-27676
GHSA Identifier GHSA-r5mf-q76q-f2xq
Severity MODERATE
CVSS v3.1 Base Score 5.4
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Centreon/centreon
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.4

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:R/S:C/C:L/I:L/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
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-2021-27676

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

centreon/centreon fixed: 20.10.7 
Upgrade centreon/centreon to 20.10.7
Verify Direct and Transitive Dependencies

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

inspect dependencies for centreon/centreon

How to Check if You Are Affected

To determine whether your application is affected by CVE-2021-27676, inspect your project dependencies for Centreon/centreon:

inspect dependencies for centreon/centreon

Analyze the terminal output to locate any version of Centreon/centreon in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 20.10.7), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

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 Centreon/centreon, 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

Centreon version 20.10.2 is affected by a cross-site scripting (XSS) vulnerability. The dep_description (Dependency Description) and dep_name (Dependency Name) parameters are vulnerable to stored XSS. A user has to log in and go to the Configuration > Notifications > Hosts page.

CVE-2021-27676 Affected Centreon/centreon Versions

1 component(s)
Fixed Versions:
20.10.7
Product / Package Ecosystem Affected Versions Fixed Version
centreon/centreon
 Packagist
< 20.10.7
20.10.7

References

NVD — CVE-2021-27676 NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-27676
Centreon/centreon Source Repository REPOSITORY
https://github.com/centreon/centreon/pull/9587
Centreon/centreon Release RELEASE
https://github.com/centreon/centreon/releases/tag/20.10.7
centreon.com WEB
http://centreon.com

Frequently Asked Questions

What is CVE-2021-27676?
CVE-2021-27676 is a security vulnerability in Centreon/centreon involving Cross-site scripting in Centreon under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Centreon/centreon versions are affected?
Affected versions include releases prior to 20.10.7 across affected packages: centreon/centreon.
What version fixes CVE-2021-27676?
Upgrading to 20.10.7 (or the latest patched release for your respective branch) resolves the vulnerability.
Is centreon/centreon affected?
Yes, centreon/centreon is affected in releases prior to 20.10.7. Upgrade your dependency to 20.10.7 or later.
What is the CVSS score of CVE-2021-27676?
CVE-2021-27676 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2021-27676?
CVE-2021-27676 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 Packagist dependencies for CVE-2021-27676?
Run the dependency tree command: 'inspect dependencies for centreon/centreon'. 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-r5mf-q76q-f2xq",
  "modified" : "2021-05-28T22:24:47Z",
  "published" : "2021-06-08T20:13:05Z",
  "aliases" : [ "CVE-2021-27676" ],
  "summary" : "Cross-site scripting in Centreon",
  "details" : "Centreon version 20.10.2 is affected by a cross-site scripting (XSS) vulnerability. The dep_description (Dependency Description) and dep_name (Dependency Name) parameters are vulnerable to stored XSS. A user has to log in and go to the Configuration > Notifications > Hosts page.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "centreon/centreon"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "20.10.7"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2021-27676"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/centreon/centreon/pull/9587"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/centreon/centreon/releases/tag/20.10.7"
  }, {
    "type" : "WEB",
    "url" : "http://centreon.com"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2021-05-28T22:24:47Z",
    "nvd_published_at" : "2021-05-26T11:15:00Z"
  }
}