CVE-2022-0967: Showdoc/showdoc Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-3pg8-c473-w6rr
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CVSS 6.9
CWE-79
Published
Advisory Summary

CVE-2022-0967 is a MODERATE (CVSS 6.9) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Showdoc/showdoc libraries in the Packagist ecosystem. The issue involves stored cross-site scripting in showdoc. Remediation is available by upgrading affected packages to version 2.10.4.

CVE-2022-0967 at a Glance

CVE Identifier CVE-2022-0967
GHSA Identifier GHSA-3pg8-c473-w6rr
Severity MODERATE
CVSS v3.1 Base Score 6.9
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Showdoc/showdoc
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.9

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H).

Attack Vector Physical (AV:P)
Attack Complexity High (AC:H)
Privileges Required High (PR:H)
User Interaction None (UI:N)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2022-0967

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

showdoc/showdoc fixed: 2.10.4 
Upgrade showdoc/showdoc to 2.10.4
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 showdoc/showdoc

How to Check if You Are Affected

To determine whether your application is affected by CVE-2022-0967, inspect your project dependencies for Showdoc/showdoc:

inspect dependencies for showdoc/showdoc

Analyze the terminal output to locate any version of Showdoc/showdoc in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.10.4), 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 Showdoc/showdoc, 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

ShowDoc is a tool for an IT team to share documents online. showdoc contains a stored cross-site scripting vulnerability in the File Library page when uploading a file in .ofd format in versions prior to 2.10.4. At this time, there is no known workaround. Users should update to version 2.10.4.

CVE-2022-0967 Affected Showdoc/showdoc Versions

1 component(s)
Fixed Versions:
2.10.4
Product / Package Ecosystem Affected Versions Fixed Version
showdoc/showdoc
 Packagist
< 2.10.4
2.10.4

References

NVD — CVE-2022-0967 NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-0967
Security Fix Commit FIX COMMIT
https://github.com/star7th/showdoc/commit/3caa32334db0c277b84e993eaca2036f5d1dbef8
Showdoc/showdoc Source Repository REPOSITORY
https://github.com/star7th/showdoc
huntr.dev/bounties/9dea3c98-7... WEB
https://huntr.dev/bounties/9dea3c98-7609-480d-902d-149067bd1e2a

Frequently Asked Questions

What is CVE-2022-0967?
CVE-2022-0967 is a security vulnerability in Showdoc/showdoc involving Stored Cross-site Scripting in showdoc under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Showdoc/showdoc versions are affected?
Affected versions include releases prior to 2.10.4 across affected packages: showdoc/showdoc.
What version fixes CVE-2022-0967?
Upgrading to 2.10.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is showdoc/showdoc affected?
Yes, showdoc/showdoc is affected in releases prior to 2.10.4. Upgrade your dependency to 2.10.4 or later.
What is the CVSS score of CVE-2022-0967?
CVE-2022-0967 has a CVSS v3.1 base score of 6.9 (MODERATE) with vector string CVSS:3.0/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2022-0967?
CVE-2022-0967 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-2022-0967?
Run the dependency tree command: 'inspect dependencies for showdoc/showdoc'. 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-3pg8-c473-w6rr",
  "modified" : "2022-03-25T00:07:36Z",
  "published" : "2022-03-16T00:00:46Z",
  "aliases" : [ "CVE-2022-0967" ],
  "summary" : "Stored Cross-site Scripting in showdoc",
  "details" : "ShowDoc is a tool for an IT team to share documents online. showdoc contains a stored cross-site scripting vulnerability in the File Library page when uploading a file in .ofd format in versions prior to 2.10.4. At this time, there is no known workaround. Users should update to version 2.10.4.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:P/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "showdoc/showdoc"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.10.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-0967"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/star7th/showdoc/commit/3caa32334db0c277b84e993eaca2036f5d1dbef8"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/star7th/showdoc"
  }, {
    "type" : "WEB",
    "url" : "https://huntr.dev/bounties/9dea3c98-7609-480d-902d-149067bd1e2a"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-03-18T23:35:38Z",
    "nvd_published_at" : "2022-03-15T16:15:00Z"
  }
}