CVE-2023-39527: Prestashop/prestashop :isCleanHTML Method Vulnerability

HIGH
Advisory Identifier: GHSA-xw2r-f8xv-c8xp
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CVSS 8.3
CWE-116
Published
Advisory Summary

CVE-2023-39527 is a HIGH (CVSS 8.3) :iscleanhtml method vulnerability (CWE-116: Improper Encoding or Escaping of Output) affecting Prestashop/prestashop libraries in the Packagist ecosystem. The issue involves :iscleanhtml method. Remediation is available by upgrading affected packages to version 8.1.1, 8.0.5, 1.7.8.10.

CVE-2023-39527 at a Glance

CVE Identifier CVE-2023-39527
GHSA Identifier GHSA-xw2r-f8xv-c8xp
Severity HIGH
CVSS v3.1 Base Score 8.3
CWE Classification CWE-116: Improper Encoding or Escaping of Output
Affected Product Prestashop/prestashop
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 8.3

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

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required High (PR:H)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality Low (C:L)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2023-39527

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

prestashop/prestashop fixed: 8.1.1 
Upgrade prestashop/prestashop to 8.1.1
prestashop/prestashop fixed: 8.0.5 
Upgrade prestashop/prestashop to 8.0.5
prestashop/prestashop fixed: 1.7.8.10 
Upgrade prestashop/prestashop to 1.7.8.10
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 prestashop/prestashop

How to Check if You Are Affected

To determine whether your application is affected by CVE-2023-39527, inspect your project dependencies for Prestashop/prestashop:

inspect dependencies for prestashop/prestashop

Analyze the terminal output to locate any version of Prestashop/prestashop in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 8.1.1), 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-116: Improper Encoding or Escaping of Output, where the product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. as a result, the intended structure of the message is not preserved. In Prestashop/prestashop, 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 xss injection through `isCleanHTML` method ### Patches 1.7.8.10 8.0.5 8.1.1 ### Found by Aleksey Solovev (Positive Technologies) ### Workarounds ### References

CVE-2023-39527 Affected Prestashop/prestashop Versions

3 component(s)
Fixed Versions:
8.1.18.0.51.7.8.10
Product / Package Ecosystem Affected Versions Fixed Version
prestashop/prestashop
 Packagist
≥ 8.1.0
< 8.1.1
All 1 versions
8.1.0
8.1.1
prestashop/prestashop
 Packagist
≥ 8.0.0
< 8.0.5
8.0.5
prestashop/prestashop
 Packagist
< 1.7.8.10
1.7.8.10

References

GitHub Advisory / Wiki ADVISORY
https://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-xw2r-f8xv-c8xp
NVD — CVE-2023-39527 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-39527
Security Fix Commit FIX COMMIT
https://github.com/PrestaShop/PrestaShop/commit/afc14f8eaa058b3e6a20ac43e033ee2656fb88b4
Prestashop/prestashop Source Repository REPOSITORY
https://github.com/PrestaShop/PrestaShop

Frequently Asked Questions

What is CVE-2023-39527?
CVE-2023-39527 is a security vulnerability in Prestashop/prestashop involving :isCleanHTML method under CWE-116: Improper Encoding or Escaping of Output.
Which Prestashop/prestashop versions are affected?
Affected versions include releases prior to 8.1.1, 8.0.5, 1.7.8.10 across affected packages: prestashop/prestashop.
What version fixes CVE-2023-39527?
Upgrading to 8.1.1, 8.0.5, 1.7.8.10 (or the latest patched release for your respective branch) resolves the vulnerability.
Is prestashop/prestashop affected?
Yes, prestashop/prestashop is affected in releases prior to 8.1.1, 8.0.5, 1.7.8.10. Upgrade your dependency to 8.1.1, 8.0.5, 1.7.8.10 or later.
What is the CVSS score of CVE-2023-39527?
CVE-2023-39527 has a CVSS v3.1 base score of 8.3 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:H/A:H.
What CWE is associated with CVE-2023-39527?
CVE-2023-39527 is classified under CWE-116: Improper Encoding or Escaping of Output (The product prepares a structured message for communication with another component, but encoding or escaping of the data is either missing or done incorrectly. As a result, the intended structure of the message is not preserved.).
How can I check Packagist dependencies for CVE-2023-39527?
Run the dependency tree command: 'inspect dependencies for prestashop/prestashop'. 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-xw2r-f8xv-c8xp",
  "modified" : "2023-08-09T14:37:16Z",
  "published" : "2023-08-09T14:37:16Z",
  "aliases" : [ "CVE-2023-39527" ],
  "summary" : "PrestaShop XSS injection through Validate::isCleanHTML method",
  "details" : "### Impact\nxss injection through `isCleanHTML` method\n\n### Patches\n1.7.8.10\n8.0.5\n8.1.1\n\n### Found by\nAleksey Solovev (Positive Technologies)\n\n### Workarounds\n\n### References\n",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "prestashop/prestashop"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.1.0"
      }, {
        "fixed" : "8.1.1"
      } ]
    } ],
    "versions" : [ "8.1.0" ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "prestashop/prestashop"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "8.0.0"
      }, {
        "fixed" : "8.0.5"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "prestashop/prestashop"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "1.7.8.10"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/PrestaShop/PrestaShop/security/advisories/GHSA-xw2r-f8xv-c8xp"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-39527"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/PrestaShop/PrestaShop/commit/afc14f8eaa058b3e6a20ac43e033ee2656fb88b4"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/PrestaShop/PrestaShop"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-116" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-08-09T14:37:16Z",
    "nvd_published_at" : "2023-08-07T21:15:10Z"
  }
}