CVE-2015-2271: Moodle/moodle Flag Capability Vulnerability

MODERATE
Advisory Identifier: GHSA-v3wp-35g3-m9mm
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Published
Advisory Summary

CVE-2015-2271 is a MODERATE flag capability vulnerability (General Security Weakness) affecting Moodle/moodle libraries in the Packagist ecosystem. The issue involves flag capability. Remediation is available by upgrading affected packages to version 2.6.9, 2.7.6, 2.8.4.

CVE-2015-2271 at a Glance

CVE Identifier CVE-2015-2271
GHSA Identifier GHSA-v3wp-35g3-m9mm
Severity MODERATE
CVSS v3.1 Base Score N/A
CWE Classification General Security Weakness
Affected Product Moodle/moodle
Package Ecosystem Packagist
Published Date
Last Updated

How to Fix CVE-2015-2271

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: 2.6.9 
Upgrade moodle/moodle to 2.6.9
moodle/moodle fixed: 2.7.6 
Upgrade moodle/moodle to 2.7.6
moodle/moodle fixed: 2.8.4 
Upgrade moodle/moodle to 2.8.4
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 moodle/moodle

How to Check if You Are Affected

To determine whether your application is affected by CVE-2015-2271, 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 2.6.9), 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 General Security Weakness. 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

tag/user.php in Moodle through 2.5.9, 2.6.x before 2.6.9, 2.7.x before 2.7.6, and 2.8.x before 2.8.4 does not consider the moodle/tag:flag capability before proceeding with a flaginappropriate action, which allows remote authenticated users to bypass intended access restrictions via the "Flag as inappropriate" feature.

CVE-2015-2271 Affected Moodle/moodle Versions

3 component(s)
Fixed Versions:
2.6.92.7.62.8.4
Product / Package Ecosystem Affected Versions Fixed Version
moodle/moodle
 Packagist
< 2.6.9
2.6.9
moodle/moodle
 Packagist
≥ 2.7.0
< 2.7.6
2.7.6
moodle/moodle
 Packagist
≥ 2.8.0
< 2.8.4
2.8.4

References

NVD — CVE-2015-2271 NVD
https://nvd.nist.gov/vuln/detail/CVE-2015-2271
Security Fix Commit FIX COMMIT
https://github.com/moodle/moodle/commit/1a344ea46f4bdedf6b8c87ae9a419e0617e1ac27
Security Fix Commit FIX COMMIT
https://github.com/moodle/moodle/commit/64e2179478849ec09c3537716e70ae8a1684b58b
Security Fix Commit FIX COMMIT
https://github.com/moodle/moodle/commit/8b4e370840dad1ec4ca6c7cef8a4d6b78e0458b7
Security Fix Commit FIX COMMIT
https://github.com/moodle/moodle/commit/b771b31e20cbf3d39aab877c648cf387e77173ba
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=307385
git.moodle.org/gw WEB
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-49084
Moodle/moodle Security Information SECURITY
http://openwall.com/lists/oss-security/2015/03/16/1

Frequently Asked Questions

What is CVE-2015-2271?
CVE-2015-2271 is a security vulnerability in Moodle/moodle involving flag capability under General Security Weakness.
Which Moodle/moodle versions are affected?
Affected versions include releases prior to 2.6.9, 2.7.6, 2.8.4 across affected packages: moodle/moodle.
What version fixes CVE-2015-2271?
Upgrading to 2.6.9, 2.7.6, 2.8.4 (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 2.6.9, 2.7.6, 2.8.4. Upgrade your dependency to 2.6.9, 2.7.6, 2.8.4 or later.
What CWE is associated with CVE-2015-2271?
CVE-2015-2271 is classified under General Security Weakness.
How can I check Packagist dependencies for CVE-2015-2271?
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-v3wp-35g3-m9mm",
  "modified" : "2024-01-25T20:57:19Z",
  "published" : "2022-05-13T01:12:45Z",
  "aliases" : [ "CVE-2015-2271" ],
  "summary" : "Moodle does not consider the moodle/tag:flag capability",
  "details" : "tag/user.php in Moodle through 2.5.9, 2.6.x before 2.6.9, 2.7.x before 2.7.6, and 2.8.x before 2.8.4 does not consider the moodle/tag:flag capability before proceeding with a flaginappropriate action, which allows remote authenticated users to bypass intended access restrictions via the \"Flag as inappropriate\" feature.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "moodle/moodle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.6.9"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "moodle/moodle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.7.0"
      }, {
        "fixed" : "2.7.6"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "moodle/moodle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.8.0"
      }, {
        "fixed" : "2.8.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2015-2271"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/moodle/moodle/commit/1a344ea46f4bdedf6b8c87ae9a419e0617e1ac27"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/moodle/moodle/commit/64e2179478849ec09c3537716e70ae8a1684b58b"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/moodle/moodle/commit/8b4e370840dad1ec4ca6c7cef8a4d6b78e0458b7"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/moodle/moodle/commit/b771b31e20cbf3d39aab877c648cf387e77173ba"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/moodle/moodle"
  }, {
    "type" : "WEB",
    "url" : "https://moodle.org/mod/forum/discuss.php?d=307385"
  }, {
    "type" : "WEB",
    "url" : "http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-49084"
  }, {
    "type" : "WEB",
    "url" : "http://openwall.com/lists/oss-security/2015/03/16/1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-01-25T20:57:19Z",
    "nvd_published_at" : "2015-06-01T19:59:00Z"
  }
}