CVE-2015-0217: Moodle/moodle Denial of Service Vulnerability

MODERATE
Advisory Identifier: GHSA-p497-37fc-xvvc
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Advisory Summary

CVE-2015-0217 is a MODERATE denial of service vulnerability (General Security Weakness) affecting Moodle/moodle libraries in the Packagist ecosystem. The issue involves moodle allows attackers to cause a denial of service. Remediation is available by upgrading affected packages to version 2.6.7, 2.7.4, 2.8.2.

CVE-2015-0217 at a Glance

CVE Identifier CVE-2015-0217
GHSA Identifier GHSA-p497-37fc-xvvc
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-2015-0217

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: 2.6.7 
Upgrade moodle/moodle to 2.6.7
moodle/moodle fixed: 2.7.4 
Upgrade moodle/moodle to 2.7.4
moodle/moodle fixed: 2.8.2 
Upgrade moodle/moodle to 2.8.2
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-2015-0217, 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 2.6.7), 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

filter/mediaplugin/filter.php in Moodle through 2.5.9, 2.6.x before 2.6.7, 2.7.x before 2.7.4, and 2.8.x before 2.8.2 allows remote authenticated users to cause a denial of service (CPU consumption or partial outage) via a crafted string that is matched against an improper regular expression.

CVE-2015-0217 Affected Moodle/moodle Versions

3 component(s)
Fixed Versions:
2.6.72.7.42.8.2
Product / Package Ecosystem Affected Versions Fixed Version
moodle/moodle
 Packagist
< 2.6.7
2.6.7
moodle/moodle
 Packagist
≥ 2.7.0
< 2.7.4
2.7.4
moodle/moodle
 Packagist
≥ 2.8.0
< 2.8.2
2.8.2

References

NVD — CVE-2015-0217 NVD
https://nvd.nist.gov/vuln/detail/CVE-2015-0217
Security Fix Commit FIX COMMIT
https://github.com/moodle/moodle/commit/01da07a42be0f69de9f316be6ee8cb25ecd60c19
Security Fix Commit FIX COMMIT
https://github.com/moodle/moodle/commit/25191bc31187f6381ad9fc690b653414ea3bc6d4
Security Fix Commit FIX COMMIT
https://github.com/moodle/moodle/commit/531492a32cf77f90bc48c4868a5f71dd7040049f
Security Fix Commit FIX COMMIT
https://github.com/moodle/moodle/commit/5329d84f0b5767f5bb800b203bfb89753ac35146
Security Fix Commit FIX COMMIT
https://github.com/moodle/moodle/commit/63ed941a9363b6da3322df2b8de5be0d1df6d81a
Security Fix Commit FIX COMMIT
https://github.com/moodle/moodle/commit/70229b7ec718ee3929109c54de74a8d14264a166
Security Fix Commit FIX COMMIT
https://github.com/moodle/moodle/commit/d11969e7775b0fc1a2debf6ec91e42d25b0eeecd
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=278617
git.moodle.org/gw WEB
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-48546
Moodle/moodle Security Information SECURITY
http://openwall.com/lists/oss-security/2015/01/19/1

Frequently Asked Questions

What is CVE-2015-0217?
CVE-2015-0217 is a security vulnerability in Moodle/moodle involving Moodle allows attackers to cause a denial of service under General Security Weakness.
Which Moodle/moodle versions are affected?
Affected versions include releases prior to 2.6.7, 2.7.4, 2.8.2 across affected packages: moodle/moodle.
What version fixes CVE-2015-0217?
Upgrading to 2.6.7, 2.7.4, 2.8.2 (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 2.6.7, 2.7.4, 2.8.2. Upgrade your dependency to 2.6.7, 2.7.4, 2.8.2 or later.
What CWE is associated with CVE-2015-0217?
CVE-2015-0217 is classified under General Security Weakness.
How can I check Packagist dependencies for CVE-2015-0217?
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-p497-37fc-xvvc",
  "modified" : "2024-01-25T20:44:40Z",
  "published" : "2022-05-13T01:12:43Z",
  "aliases" : [ "CVE-2015-0217" ],
  "summary" : "Moodle allows attackers to cause a denial of service",
  "details" : "filter/mediaplugin/filter.php in Moodle through 2.5.9, 2.6.x before 2.6.7, 2.7.x before 2.7.4, and 2.8.x before 2.8.2 allows remote authenticated users to cause a denial of service (CPU consumption or partial outage) via a crafted string that is matched against an improper regular expression.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "moodle/moodle"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
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      }, {
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      } ]
    } ]
  }, {
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    "ranges" : [ {
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      } ]
    } ]
  }, {
    "package" : {
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    },
    "ranges" : [ {
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      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
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  }, {
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  }, {
    "type" : "WEB",
    "url" : "https://github.com/moodle/moodle/commit/5329d84f0b5767f5bb800b203bfb89753ac35146"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/moodle/moodle/commit/63ed941a9363b6da3322df2b8de5be0d1df6d81a"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/moodle/moodle/commit/70229b7ec718ee3929109c54de74a8d14264a166"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/moodle/moodle/commit/d11969e7775b0fc1a2debf6ec91e42d25b0eeecd"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/moodle/moodle"
  }, {
    "type" : "WEB",
    "url" : "https://moodle.org/mod/forum/discuss.php?d=278617"
  }, {
    "type" : "WEB",
    "url" : "http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-48546"
  }, {
    "type" : "WEB",
    "url" : "http://openwall.com/lists/oss-security/2015/01/19/1"
  } ],
  "database_specific" : {
    "cwe_ids" : [ ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-01-25T20:44:40Z",
    "nvd_published_at" : "2015-06-01T19:59:00Z"
  }
}