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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2020-25817 Detail

Description

SilverStripe through 4.6.0-rc1 has an XXE Vulnerability in CSSContentParser. A developer utility meant for parsing HTML within unit tests can be vulnerable to XML External Entity (XXE) attacks. When this developer utility is misused for purposes involving external or user submitted data in custom project code, it can lead to vulnerabilities such as XSS on HTML output rendered through this custom code. This is now mitigated by disabling external entities during parsing. (The correct CVE ID year is 2020 [CVE-2020-25817, not CVE-2021-25817]).


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 3.x Severity and Vector Strings:

NIST CVSS score
NIST: NVD
Base Score:  4.8 MEDIUM
Vector:  CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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Hyperlink Resource
https://forum.silverstripe.org/c/releases Release Notes  Vendor Advisory 
https://forum.silverstripe.org/c/releases Release Notes  Vendor Advisory 
https://www.silverstripe.org/blog/tag/release Release Notes  Vendor Advisory 
https://www.silverstripe.org/blog/tag/release Release Notes  Vendor Advisory 
https://www.silverstripe.org/download/security-releases/ Vendor Advisory 
https://www.silverstripe.org/download/security-releases/ Vendor Advisory 
https://www.silverstripe.org/download/security-releases/cve-2020-25817 Broken Link 
https://www.silverstripe.org/download/security-releases/cve-2020-25817 Broken Link 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-611 Improper Restriction of XML External Entity Reference cwe source acceptance level NIST  

Known Affected Software Configurations Switch to CPE 2.2

Configuration 1 ( hide )
 cpe:2.3:a:silverstripe:silverstripe:*:*:*:*:*:*:*:*
   Show Matching CPE(s) 		Up to (excluding)
4.6.0
 cpe:2.3:a:silverstripe:silverstripe:4.6.0:rc1:*:*:*:*:*:*
   Show Matching CPE(s)

Denotes Vulnerable Software
Are we missing a CPE here? Please let us know.

Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2020-25817
NVD Published Date:
06/08/2021
NVD Last Modified:
11/21/2024
Source:
MITRE