CVE-2020-21523

CVSS V2 High 10 CVSS V3 Critical 9.8
Description
A Server-Side Freemarker template injection vulnerability in halo CMS v1.1.3 In the Edit Theme File function. The ftl file can be edited. This is the Freemarker template file. This file can cause arbitrary code execution when it is rendered in the background. exp: <#assign test="freemarker.template.utility.Execute"?new()> ${test("touch /tmp/freemarkerPwned")}
Overview
  • CVE ID
  • CVE-2020-21523
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2020-09-30T18:15:23
  • Last Modified Date
  • 2020-10-09T17:40:07
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:halo:halo:1.1.3:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:C/I:C/A:C
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • COMPLETE
  • Integrity Impact
  • COMPLETE
  • Availability Impact
  • COMPLETE
  • Base Score
  • 10
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 10
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 9.8
  • Base Severity
  • CRITICAL
  • Exploitability Score
  • 3.9
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://github.com/halo-dev/halo/issues/419 Exploit Issue Tracking Third Party Advisory
History
Created Old Value New Value Data Type Notes
2022-05-10 17:09:19 Added to TrackCVE
2022-12-04 23:32:21 2020-09-30T18:15Z 2020-09-30T18:15:23 CVE Published Date updated
2022-12-04 23:32:21 2020-10-09T17:40:07 CVE Modified Date updated
2022-12-04 23:32:21 Analyzed Vulnerability Status updated