CVE-2023-5548: Moodle/moodle Moodle Acceptance Of Extraneous Untrusted Vulnerability

MODERATE
Advisory Identifier: GHSA-cwh2-q44x-5w3c
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CVSS 5.3
CWE-349 CWE-345
Published
Advisory Summary

CVE-2023-5548 is a MODERATE (CVSS 5.3) moodle acceptance of extraneous untrusted vulnerability (CWE-349: Acceptance of Extraneous Untrusted Data With Trusted Data) affecting Moodle/moodle libraries in the Packagist ecosystem. The issue involves moodle acceptance of extraneous untrusted data with trusted data vulnerability. Remediation is available by upgrading affected packages to version 4.3.0-rc2.

CVE-2023-5548 at a Glance

CVE Identifier CVE-2023-5548
GHSA Identifier GHSA-cwh2-q44x-5w3c
Severity MODERATE
CVSS v3.1 Base Score 5.3
CWE Classification CWE-349: Acceptance of Extraneous Untrusted Data With Trusted Data
Affected Product Moodle/moodle
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 5.3

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

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

How to Fix CVE-2023-5548

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

moodle/moodle fixed: 4.3.0-rc2 
Upgrade moodle/moodle to 4.3.0-rc2
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 moodle/moodle

How to Check if You Are Affected

To determine whether your application is affected by CVE-2023-5548, inspect your project dependencies for Moodle/moodle:

inspect dependencies for moodle/moodle

Analyze the terminal output to locate any version of Moodle/moodle in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.3.0-rc2), 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-349: Acceptance of Extraneous Untrusted Data With Trusted Data, where the product, when processing trusted data, accepts any untrusted data that is also included with the trusted data, treating the untrusted data as if it were trusted. In Moodle/moodle, 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

Stronger revision number limitations were required on file serving endpoints to improve cache poisoning protection.

CVE-2023-5548 Affected Moodle/moodle Versions

1 component(s)
Fixed Versions:
4.3.0-rc2
Product / Package Ecosystem Affected Versions Fixed Version
moodle/moodle
 Packagist
< 4.3.0-rc2
4.3.0-rc2

References

NVD — CVE-2023-5548 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-5548
Security Fix Commit FIX COMMIT
https://github.com/moodle/moodle/commit/7679452caff6faa33f00d3f0589c5190bc01a933
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2243449
Moodle/moodle Source Repository REPOSITORY
https://github.com/moodle/moodle
moodle.org/mod/forum/discuss.p... WEB
https://moodle.org/mod/forum/discuss.php?d=451589
git.moodle.org/gw WEB
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-77846

Frequently Asked Questions

What is CVE-2023-5548?
CVE-2023-5548 is a security vulnerability in Moodle/moodle involving Moodle Acceptance of Extraneous Untrusted Data With Trusted Data vulnerability under CWE-349: Acceptance of Extraneous Untrusted Data With Trusted Data.
Which Moodle/moodle versions are affected?
Affected versions include releases prior to 4.3.0-rc2 across affected packages: moodle/moodle.
What version fixes CVE-2023-5548?
Upgrading to 4.3.0-rc2 (or the latest patched release for your respective branch) resolves the vulnerability.
Is moodle/moodle affected?
Yes, moodle/moodle is affected in releases prior to 4.3.0-rc2. Upgrade your dependency to 4.3.0-rc2 or later.
What is the CVSS score of CVE-2023-5548?
CVE-2023-5548 has a CVSS v3.1 base score of 5.3 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
What CWE is associated with CVE-2023-5548?
CVE-2023-5548 is classified under CWE-349: Acceptance of Extraneous Untrusted Data With Trusted Data (The product, when processing trusted data, accepts any untrusted data that is also included with the trusted data, treating the untrusted data as if it were trusted.).
How can I check Packagist dependencies for CVE-2023-5548?
Run the dependency tree command: 'inspect dependencies for moodle/moodle'. 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-cwh2-q44x-5w3c",
  "modified" : "2023-11-17T21:59:36Z",
  "published" : "2023-11-09T21:30:39Z",
  "aliases" : [ "CVE-2023-5548" ],
  "summary" : "Moodle Acceptance of Extraneous Untrusted Data With Trusted Data vulnerability",
  "details" : "Stronger revision number limitations were required on file serving endpoints to improve cache poisoning protection.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "moodle/moodle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.3.0-rc2"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-5548"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/moodle/moodle/commit/7679452caff6faa33f00d3f0589c5190bc01a933"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2243449"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/moodle/moodle"
  }, {
    "type" : "WEB",
    "url" : "https://moodle.org/mod/forum/discuss.php?d=451589"
  }, {
    "type" : "WEB",
    "url" : "http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-77846"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-345", "CWE-349" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-11-10T00:42:08Z",
    "nvd_published_at" : "2023-11-09T20:15:10Z"
  }
}