CVE-2015-8766: Symphonycms/symphony 2 Cross-Site Scripting Vulnerability

MODERATE
Advisory Identifier: GHSA-4c5w-qqfg-grf3
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CVSS 6.1
CWE-79
Published
Advisory Summary

CVE-2015-8766 is a MODERATE (CVSS 6.1) cross-site scripting vulnerability (CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')) affecting Symphonycms/symphony 2 libraries in the Packagist ecosystem. The issue involves symphony cms xss vulnerabilities. Remediation is available by upgrading affected packages to version 2.6.4.

CVE-2015-8766 at a Glance

CVE Identifier CVE-2015-8766
GHSA Identifier GHSA-4c5w-qqfg-grf3
Severity MODERATE
CVSS v3.1 Base Score 6.1
CWE Classification CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Affected Product Symphonycms/symphony 2
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.1

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N).

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

How to Fix CVE-2015-8766

To remediate this vulnerability, upgrade all affected Symphonycms/symphony 2 dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

symphonycms/symphony-2 fixed: 2.6.4 
Upgrade symphonycms/symphony-2 to 2.6.4
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 symphonycms/symphony-2

How to Check if You Are Affected

To determine whether your application is affected by CVE-2015-8766, inspect your project dependencies for Symphonycms/symphony 2:

inspect dependencies for symphonycms/symphony-2

Analyze the terminal output to locate any version of Symphonycms/symphony 2 in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.6.4), 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 Symphonycms/symphony 2, 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

Multiple cross-site scripting (XSS) vulnerabilities in `content/content.systempreferences.php` in Symphony CMS before 2.6.4 allow remote attackers to inject arbitrary web script or HTML via the (1) `email_sendmail[from_name]`, (2) `email_sendmail[from_address]`, (3) `email_smtp[from_name]`, (4) `email_smtp[from_address]`, (5) `email_smtp[host]`, (6) `email_smtp[port]`, (7) `jit_image_manipulation[trusted_external_sites]`, or (8) `maintenance_mode[ip_whitelist]` parameters to system/preferences.

CVE-2015-8766 Affected Symphonycms/symphony 2 Versions

1 component(s)
Fixed Versions:
2.6.4
Product / Package Ecosystem Affected Versions Fixed Version
symphonycms/symphony-2
 Packagist
< 2.6.4
2.6.4

References

NVD — CVE-2015-8766 NVD
https://nvd.nist.gov/vuln/detail/CVE-2015-8766
Security Fix Commit FIX COMMIT
https://github.com/symphonycms/symphony-2/commit/651e150091c61fb60ad1dff2bc2166185a83d9d6
Symphonycms/symphony 2 Source Repository REPOSITORY
https://github.com/symphonycms/symphony-2
Symphonycms/symphony 2 Security Information SECURITY
https://web.archive.org/web/20210321090853/https://cybersecurityworks.com/zerodays/cve-2015-8766-getsymphoney.html
seclists.org/fulldisclosure/2015... WEB
http://seclists.org/fulldisclosure/2015/Dec/60
www.getsymphony.com/download/releases/v... WEB
http://www.getsymphony.com/download/releases/version/2.6.4

Frequently Asked Questions

What is CVE-2015-8766?
CVE-2015-8766 is a security vulnerability in Symphonycms/symphony 2 involving Symphony CMS XSS Vulnerabilities under CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting').
Which Symphonycms/symphony 2 versions are affected?
Affected versions include releases prior to 2.6.4 across affected packages: symphonycms/symphony-2.
What version fixes CVE-2015-8766?
Upgrading to 2.6.4 (or the latest patched release for your respective branch) resolves the vulnerability.
Is symphonycms/symphony-2 affected?
Yes, symphonycms/symphony-2 is affected in releases prior to 2.6.4. Upgrade your dependency to 2.6.4 or later.
What is the CVSS score of CVE-2015-8766?
CVE-2015-8766 has a CVSS v3.1 base score of 6.1 (MODERATE) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
What CWE is associated with CVE-2015-8766?
CVE-2015-8766 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-2015-8766?
Run the dependency tree command: 'inspect dependencies for symphonycms/symphony-2'. 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-4c5w-qqfg-grf3",
  "modified" : "2023-12-07T19:48:34Z",
  "published" : "2022-05-13T01:13:58Z",
  "aliases" : [ "CVE-2015-8766" ],
  "summary" : "Symphony CMS XSS Vulnerabilities",
  "details" : "Multiple cross-site scripting (XSS) vulnerabilities in `content/content.systempreferences.php` in Symphony CMS before 2.6.4 allow remote attackers to inject arbitrary web script or HTML via the (1) `email_sendmail[from_name]`, (2) `email_sendmail[from_address]`, (3) `email_smtp[from_name]`, (4) `email_smtp[from_address]`, (5) `email_smtp[host]`, (6) `email_smtp[port]`, (7) `jit_image_manipulation[trusted_external_sites]`, or (8) `maintenance_mode[ip_whitelist]` parameters to system/preferences.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "symphonycms/symphony-2"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.6.4"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2015-8766"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/symphonycms/symphony-2/commit/651e150091c61fb60ad1dff2bc2166185a83d9d6"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/symphonycms/symphony-2"
  }, {
    "type" : "WEB",
    "url" : "https://web.archive.org/web/20210321090853/https://cybersecurityworks.com/zerodays/cve-2015-8766-getsymphoney.html"
  }, {
    "type" : "WEB",
    "url" : "http://seclists.org/fulldisclosure/2015/Dec/60"
  }, {
    "type" : "WEB",
    "url" : "http://www.getsymphony.com/download/releases/version/2.6.4"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-79" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2023-08-01T20:00:06Z",
    "nvd_published_at" : "2016-01-08T21:59:00Z"
  }
}