CVE-2017-16807: Getkirby/cms Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-275c-v3rc-xghx
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CVSS 5.4
CWE-79
Published
Advisory Summary

CVE-2017-16807 is a MODERATE (CVSS 5.4) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Getkirby/cms libraries in the Packagist ecosystem. The issue involves kirby xss vulnerability. Remediation is available by upgrading affected packages to version 2.3.3, 2.4.2, 2.5.7.

CVE-2017-16807 at a Glance

CVE Identifier CVE-2017-16807
GHSA Identifier GHSA-275c-v3rc-xghx
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 Getkirby/cms
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:3.0/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-2017-16807

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

getkirby/cms fixed: 2.3.3 
Upgrade getkirby/cms to 2.3.3
getkirby/cms fixed: 2.4.2 
Upgrade getkirby/cms to 2.4.2
getkirby/cms fixed: 2.5.7 
Upgrade getkirby/cms to 2.5.7
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 getkirby/cms

How to Check if You Are Affected

To determine whether your application is affected by CVE-2017-16807, inspect your project dependencies for Getkirby/cms:

inspect dependencies for getkirby/cms

Analyze the terminal output to locate any version of Getkirby/cms in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.3.3), 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 Getkirby/cms, 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

A cross-site Scripting (XSS) vulnerability in Kirby Panel before 2.3.3, 2.4.x before 2.4.2, and 2.5.x before 2.5.7 exists when displaying a specially prepared SVG document that has been uploaded as a content file.

CVE-2017-16807 Affected Getkirby/cms Versions

3 component(s)
Fixed Versions:
2.3.32.4.22.5.7
Product / Package Ecosystem Affected Versions Fixed Version
getkirby/cms
 Packagist
< 2.3.3
2.3.3
getkirby/cms
 Packagist
≥ 2.4
< 2.4.2
2.4.2
getkirby/cms
 Packagist
≥ 2.5
< 2.5.7
2.5.7

References

NVD — CVE-2017-16807 NVD
https://nvd.nist.gov/vuln/detail/CVE-2017-16807
getkirby.com/changelog/kirby-2-5... WEB
https://getkirby.com/changelog/kirby-2-5-7
Getkirby/cms Security Information SECURITY
https://packetstormsecurity.com/files/144965/KirbyCMS-Cross-Site-Scripting.html
www.exploit-db.com/exploits/43140 WEB
https://www.exploit-db.com/exploits/43140

Frequently Asked Questions

What is CVE-2017-16807?
CVE-2017-16807 is a security vulnerability in Getkirby/cms involving Kirby XSS Vulnerability under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Getkirby/cms versions are affected?
Affected versions include releases prior to 2.3.3, 2.4.2, 2.5.7 across affected packages: getkirby/cms.
What version fixes CVE-2017-16807?
Upgrading to 2.3.3, 2.4.2, 2.5.7 (or the latest patched release for your respective branch) resolves the vulnerability.
Is getkirby/cms affected?
Yes, getkirby/cms is affected in releases prior to 2.3.3, 2.4.2, 2.5.7. Upgrade your dependency to 2.3.3, 2.4.2, 2.5.7 or later.
What is the CVSS score of CVE-2017-16807?
CVE-2017-16807 has a CVSS v3.1 base score of 5.4 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2017-16807?
CVE-2017-16807 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-2017-16807?
Run the dependency tree command: 'inspect dependencies for getkirby/cms'. 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-275c-v3rc-xghx",
  "modified" : "2023-07-26T21:06:42Z",
  "published" : "2022-05-14T00:55:16Z",
  "aliases" : [ "CVE-2017-16807" ],
  "summary" : "Kirby XSS Vulnerability",
  "details" : "A cross-site Scripting (XSS) vulnerability in Kirby Panel before 2.3.3, 2.4.x before 2.4.2, and 2.5.x before 2.5.7 exists when displaying a specially prepared SVG document that has been uploaded as a content file.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "getkirby/cms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.3.3"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "getkirby/cms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.4"
      }, {
        "fixed" : "2.4.2"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "getkirby/cms"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.5"
      }, {
        "fixed" : "2.5.7"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2017-16807"
  }, {
    "type" : "WEB",
    "url" : "https://getkirby.com/changelog/kirby-2-5-7"
  }, {
    "type" : "WEB",
    "url" : "https://packetstormsecurity.com/files/144965/KirbyCMS-Cross-Site-Scripting.html"
  }, {
    "type" : "WEB",
    "url" : "https://www.exploit-db.com/exploits/43140"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-07-26T21:06:42Z",
    "nvd_published_at" : "2017-11-13T21:29:00Z"
  }
}