CVE-2017-0897

CVSS V2 Medium 5 CVSS V3 High 7.5
Description
ExpressionEngine version 2.x < 2.11.8 and version 3.x < 3.5.5 create an object signing token with weak entropy. Successfully guessing the token can lead to remote code execution.
Overview
  • CVE ID
  • CVE-2017-0897
  • Assigner
  • support@hackerone.com
  • Vulnerability Status
  • Modified
  • Published Version
  • 2017-06-22T21:29:00
  • Last Modified Date
  • 2019-10-09T23:21:09
Weakness Enumerations
CWE URL
CWE-331 http://cwe.mitre.org/data/definitions/331.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:expressionengine:expressionengine:2.0.0:public_beta:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.0.1:public_beta:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.0.2:public_beta:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.1.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.1.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.1.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.1.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.1.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.1.5:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.2.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.2.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.2.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.3.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.3.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.4.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.5.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.5.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.5.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.5.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.5.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.5.5:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.6.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.6.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.7.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.7.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.7.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.7.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.8.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.8.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.9.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.9.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.9.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.9.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.10.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.10.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.10.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.10.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.11.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.11.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.11.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.11.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.11.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.11.5:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.11.6:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:2.11.7:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.0.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.0.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.0.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.0.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.0.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.0.5:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.0.6:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.1.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.1.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.1.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.1.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.1.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.2.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.2.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.3.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.3.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.3.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.3.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.3.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.4.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.4.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.4.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.4.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.4.4:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.4.5:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.4.6:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.4.7:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.5.0:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.5.1:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.5.2:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.5.3:*:*:*:*:*:*:* 1 OR
cpe:2.3:a:expressionengine:expressionengine:3.5.4:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:N/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • NONE
  • Availability Impact
  • NONE
  • Base Score
  • 5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 10
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.0
  • Vector String
  • CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • NONE
  • Base Score
  • 7.5
  • Base Severity
  • HIGH
  • Exploitability Score
  • 3.9
  • Impact Score
  • 3.6
References
Reference URL Reference Tags
https://hackerone.com/reports/215890 Permissions Required
https://expressionengine.com/blog/expressionengine-3.5.5-and-2.11.8-released Vendor Advisory
https://docs.expressionengine.com/v2/about/changelog.html#version-2-11-8 Vendor Advisory
https://docs.expressionengine.com/latest/about/changelog.html#version-3-5-5 Vendor Advisory
http://www.securityfocus.com/bid/99242 Third Party Advisory VDB Entry
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2017-0897
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-0897
History
Created Old Value New Value Data Type Notes
2022-05-10 17:13:23 Added to TrackCVE
2022-12-02 18:03:11 cve-assignments@hackerone.com support@hackerone.com CVE Assigner updated
2022-12-02 18:03:11 2017-06-22T21:29Z 2017-06-22T21:29:00 CVE Published Date updated
2022-12-02 18:03:11 2019-10-09T23:21:09 CVE Modified Date updated
2022-12-02 18:03:11 Modified Vulnerability Status updated