CVE-2020-21524

CVSS V2 Medium 6.4 CVSS V3 Critical 9.1

Description

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

Overview

CVE ID
CVE-2020-21524

Assigner
cve@mitre.org

Vulnerability Status
Analyzed

Published Version
2020-09-30T18:15:24

Last Modified Date
2020-10-08T19:34:37

Weakness Enumerations

CWE	URL
CWE-611	http://cwe.mitre.org/data/definitions/611.html

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:P/I:N/A:P

Access Vector
NETWORK

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
PARTIAL

Integrity Impact
NONE

Availability Impact
PARTIAL

Base Score
6.4

Severity
MEDIUM

Exploitability Score
10

Impact Score
4.9

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
9.1

Base Severity
CRITICAL

Exploitability Score
3.9

Impact Score
5.2

References

Reference URL	Reference Tags
https://github.com/halo-dev/halo/issues/423	Exploit Issue Tracking Third Party Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2020-21524
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-21524

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 17:09:37				Added to TrackCVE
2022-12-04 23:32:25	2020-09-30T18:15Z	2020-09-30T18:15:24	CVE Published Date	updated
2022-12-04 23:32:25		2020-10-08T19:34:37	CVE Modified Date	updated
2022-12-04 23:32:25		Analyzed	Vulnerability Status	updated