CVE-2015-3174: Moodle/moodle Cross-Site Scripting Vulnerability

LOW
Advisory Identifier: GHSA-6r7x-6q98-qcqp
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CWE-79
Published
Advisory Summary

CVE-2015-3174 is a LOW cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Moodle/moodle libraries in the Packagist ecosystem. The issue involves moodle does not set the risk_xss bit for graders. Remediation is available by upgrading affected packages to version 2.6.11, 2.7.8, 2.8.6.

CVE-2015-3174 at a Glance

CVE Identifier CVE-2015-3174
GHSA Identifier GHSA-6r7x-6q98-qcqp
Severity LOW
CVSS v3.1 Base Score N/A
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Moodle/moodle
Package Ecosystem Packagist
Published Date
Last Updated

How to Fix CVE-2015-3174

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: 2.6.11 
Upgrade moodle/moodle to 2.6.11
moodle/moodle fixed: 2.7.8 
Upgrade moodle/moodle to 2.7.8
moodle/moodle fixed: 2.8.6 
Upgrade moodle/moodle to 2.8.6
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-2015-3174, 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 2.6.11), 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 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

mod/quiz/db/access.php in Moodle through 2.5.9, 2.6.x before 2.6.11, 2.7.x before 2.7.8, and 2.8.x before 2.8.6 does not set the RISK_XSS bit for graders, which allows remote authenticated users to conduct cross-site scripting (XSS) attacks via crafted gradebook feedback during manual quiz grading.

CVE-2015-3174 Affected Moodle/moodle Versions

3 component(s)
Fixed Versions:
2.6.112.7.82.8.6
Product / Package Ecosystem Affected Versions Fixed Version
moodle/moodle
 Packagist
< 2.6.11
2.6.11
moodle/moodle
 Packagist
≥ 2.7.0
< 2.7.8
2.7.8
moodle/moodle
 Packagist
≥ 2.8.0
< 2.8.6
2.8.6

References

NVD — CVE-2015-3174 NVD
https://nvd.nist.gov/vuln/detail/CVE-2015-3174
Security Fix Commit FIX COMMIT
https://github.com/moodle/moodle/commit/10c2b92448873a8479942098a090e7c16b44438d
Security Fix Commit FIX COMMIT
https://github.com/moodle/moodle/commit/1ce4f44df7e793051211841b6a78ac77bd42fc99
Security Fix Commit FIX COMMIT
https://github.com/moodle/moodle/commit/39ae18a2f90fcf392a711dd41f9aa7627f72a762
Security Fix Commit FIX COMMIT
https://github.com/moodle/moodle/commit/e51fdfe0cbab19320f139773d83aacb1ad15eb46
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=313681
Moodle/moodle Security Information SECURITY
https://web.archive.org/web/20201030042703/http://www.securitytracker.com/id/1032358
git.moodle.org/gw WEB
http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-49941
Moodle/moodle Security Information SECURITY
http://openwall.com/lists/oss-security/2015/05/18/1
Moodle/moodle Security Information SECURITY
http://www.securityfocus.com/bid/74719https://web.archive.org/web/20200228054910/http://www.securityfocus.com/bid/74719

Frequently Asked Questions

What is CVE-2015-3174?
CVE-2015-3174 is a security vulnerability in Moodle/moodle involving Moodle does not set the RISK_XSS bit for graders under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Moodle/moodle versions are affected?
Affected versions include releases prior to 2.6.11, 2.7.8, 2.8.6 across affected packages: moodle/moodle.
What version fixes CVE-2015-3174?
Upgrading to 2.6.11, 2.7.8, 2.8.6 (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 2.6.11, 2.7.8, 2.8.6. Upgrade your dependency to 2.6.11, 2.7.8, 2.8.6 or later.
What CWE is associated with CVE-2015-3174?
CVE-2015-3174 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-2015-3174?
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-6r7x-6q98-qcqp",
  "modified" : "2024-01-26T01:04:46Z",
  "published" : "2022-05-13T01:12:45Z",
  "aliases" : [ "CVE-2015-3174" ],
  "summary" : "Moodle does not set the RISK_XSS bit for graders",
  "details" : "mod/quiz/db/access.php in Moodle through 2.5.9, 2.6.x before 2.6.11, 2.7.x before 2.7.8, and 2.8.x before 2.8.6 does not set the RISK_XSS bit for graders, which allows remote authenticated users to conduct cross-site scripting (XSS) attacks via crafted gradebook feedback during manual quiz grading.",
  "severity" : [ ],
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    },
    "ranges" : [ {
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      } ]
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  }, {
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    "ranges" : [ {
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      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2015-3174"
  }, {
    "type" : "WEB",
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    "type" : "WEB",
    "url" : "https://github.com/moodle/moodle/commit/1ce4f44df7e793051211841b6a78ac77bd42fc99"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/moodle/moodle/commit/39ae18a2f90fcf392a711dd41f9aa7627f72a762"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/moodle/moodle/commit/e51fdfe0cbab19320f139773d83aacb1ad15eb46"
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    "type" : "PACKAGE",
    "url" : "https://github.com/moodle/moodle"
  }, {
    "type" : "WEB",
    "url" : "https://moodle.org/mod/forum/discuss.php?d=313681"
  }, {
    "type" : "WEB",
    "url" : "https://web.archive.org/web/20201030042703/http://www.securitytracker.com/id/1032358"
  }, {
    "type" : "WEB",
    "url" : "http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-49941"
  }, {
    "type" : "WEB",
    "url" : "http://openwall.com/lists/oss-security/2015/05/18/1"
  }, {
    "type" : "WEB",
    "url" : "http://www.securityfocus.com/bid/74719https://web.archive.org/web/20200228054910/http://www.securityfocus.com/bid/74719"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "LOW",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-01-26T01:04:46Z",
    "nvd_published_at" : "2015-06-01T19:59:00Z"
  }
}