Executive Summary

Informations
Name CVE-2020-21524 First vendor Publication 2020-09-30
Vendor Cve Last vendor Modification 2024-11-21

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Overall CVSS Score 9.1
Base Score 9.1 Environmental Score 9.1
impact SubScore 5.2 Temporal Score 9.1
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact High
Integrity Impact None Availability Impact High
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:P/I:N/A:P)
Cvss Base Score 6.4 Attack Range Network
Cvss Impact Score 4.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

There is a XML external entity (XXE) vulnerability in halo v1.1.3, The function of importing other blogs in the background(/api/admin/migrations/wordpress) needs to parse the xml file, but it is not used for security defense, This vulnerability can detect the intranet, read files, enable ddos attacks, etc. exp:https://github.com/halo-dev/halo/issues/423

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-21524

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-611 Information Leak Through XML External Entity File Disclosure

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1

Sources (Detail)

https://github.com/halo-dev/halo/issues/423
Source Url

Alert History

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Date Informations
2024-11-28 13:41:32
  • Multiple Updates
2021-05-04 13:50:07
  • Multiple Updates
2021-04-22 03:01:48
  • Multiple Updates
2020-10-09 00:22:56
  • Multiple Updates
2020-10-01 00:22:53
  • First insertion