CVE-2006-3695: Trac Denial of Service Vulnerability

HIGH
Advisory Identifier: GHSA-r524-c2gf-5chr
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CVSS 9.4
CWE-400 CWE-200
Published
Advisory Summary

CVE-2006-3695 is a HIGH (CVSS 9.4) denial of service vulnerability (CWE-400: Uncontrolled Resource Consumption) affecting Trac libraries in the PyPI ecosystem. The issue involves trac restructuredtext breach of privacy and denial of service vulnerability. Remediation is available by upgrading affected packages to version 0.9.6.

CVE-2006-3695 at a Glance

CVE Identifier CVE-2006-3695
GHSA Identifier GHSA-r524-c2gf-5chr
Severity HIGH
CVSS v3.1 Base Score 9.4
CWE Classification CWE-400: Uncontrolled Resource Consumption
Affected Product Trac
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 9.4

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:H/I:L/A:H).

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 High (C:H)
Integrity Low (I:L)
Availability High (A:H)

How to Fix CVE-2006-3695

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

trac fixed: 0.9.6 
pip install trac>=0.9.6
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show trac

How to Check if You Are Affected

To determine whether your Python environment is affected by CVE-2006-3695, inspect your installed packages using pip:

pip show trac

Analyze the terminal output to locate any version of Trac in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.9.6), your application is affected.

Note: The pip show trac command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-400: Uncontrolled Resource Consumption, where the product does not properly control the allocation and maintenance of a limited resource. In Trac, 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

Trac before 0.9.6 does not disable the "raw" or "include" commands when providing untrusted users with restructured text (reStructuredText) functionality from docutils, which allows remote attackers to read arbitrary files, perform cross-site scripting (XSS) attacks, or cause a denial of service via unspecified vectors. NOTE: this might be related to CVE-2006-3458.

CVE-2006-3695 Affected Trac Versions

1 component(s)
Fixed Versions:
0.9.6
Product / Package Ecosystem Affected Versions Fixed Version
trac
pypi/trac
PyPI
< 0.9.6
0.9.6

References

NVD — CVE-2006-3695 NVD
https://nvd.nist.gov/vuln/detail/CVE-2006-3695
exchange.xforce.ibmcloud.com/vulnerabilities/277... WEB
https://exchange.xforce.ibmcloud.com/vulnerabilities/27706
exchange.xforce.ibmcloud.com/vulnerabilities/277... WEB
https://exchange.xforce.ibmcloud.com/vulnerabilities/27708
Trac Source Repository REPOSITORY
https://github.com/pypa/advisory-database/tree/main/vulns/trac/PYSEC-2006-2.yaml
web.archive.org/web/20061227230548/... WEB
https://web.archive.org/web/20061227230548/http://trac.edgewall.org/wiki/ChangeLog
web.archive.org/web/20140804165436/... WEB
https://web.archive.org/web/20140804165436/http://secunia.com/advisories/21534
web.archive.org/web/20140806223337/... WEB
https://web.archive.org/web/20140806223337/http://secunia.com/advisories/20958
Trac Security Information SECURITY
https://web.archive.org/web/20200228034827/http://www.securityfocus.com/bid/18323
Trac Security Information SECURITY
http://trac.edgewall.org/wiki/ChangeLog
Trac Security Information SECURITY
http://www.debian.org/security/2006/dsa-1152

Frequently Asked Questions

What is CVE-2006-3695?
CVE-2006-3695 is a security vulnerability in Trac involving Trac reStructuredText breach of privacy and denial of service vulnerability under CWE-400: Uncontrolled Resource Consumption.
Which Trac versions are affected?
Affected versions include releases prior to 0.9.6 across affected packages: trac.
What version fixes CVE-2006-3695?
Upgrading to 0.9.6 (or the latest patched release for your respective branch) resolves the vulnerability.
Is trac affected?
Yes, trac is affected in releases prior to 0.9.6. Upgrade your dependency to 0.9.6 or later.
What is the CVSS score of CVE-2006-3695?
CVE-2006-3695 has a CVSS v3.1 base score of 9.4 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H.
What CWE is associated with CVE-2006-3695?
CVE-2006-3695 is classified under CWE-400: Uncontrolled Resource Consumption (The product does not properly control the allocation and maintenance of a limited resource.).
How can I check PyPI dependencies for CVE-2006-3695?
Run the dependency tree command: 'pip show trac'. 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-r524-c2gf-5chr",
  "modified" : "2024-11-18T20:51:24Z",
  "published" : "2022-05-01T07:11:38Z",
  "aliases" : [ "CVE-2006-3695" ],
  "summary" : "Trac reStructuredText breach of privacy and denial of service vulnerability",
  "details" : "Trac before 0.9.6 does not disable the \"raw\" or \"include\" commands when providing untrusted users with restructured text (reStructuredText) functionality from docutils, which allows remote attackers to read arbitrary files, perform cross-site scripting (XSS) attacks, or cause a denial of service via unspecified vectors. NOTE: this might be related to CVE-2006-3458.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:L/SA:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "trac"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "0.9.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2006-3695"
  }, {
    "type" : "WEB",
    "url" : "https://exchange.xforce.ibmcloud.com/vulnerabilities/27706"
  }, {
    "type" : "WEB",
    "url" : "https://exchange.xforce.ibmcloud.com/vulnerabilities/27708"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/pypa/advisory-database/tree/main/vulns/trac/PYSEC-2006-2.yaml"
  }, {
    "type" : "WEB",
    "url" : "https://web.archive.org/web/20061227230548/http://trac.edgewall.org/wiki/ChangeLog"
  }, {
    "type" : "WEB",
    "url" : "https://web.archive.org/web/20140804165436/http://secunia.com/advisories/21534"
  }, {
    "type" : "WEB",
    "url" : "https://web.archive.org/web/20140806223337/http://secunia.com/advisories/20958"
  }, {
    "type" : "WEB",
    "url" : "https://web.archive.org/web/20200228034827/http://www.securityfocus.com/bid/18323"
  }, {
    "type" : "WEB",
    "url" : "http://trac.edgewall.org/wiki/ChangeLog"
  }, {
    "type" : "WEB",
    "url" : "http://www.debian.org/security/2006/dsa-1152"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-200", "CWE-400" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-04-29T14:32:49Z",
    "nvd_published_at" : "2006-07-21T14:03:00Z"
  }
}