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]).
References
Link | Resource |
---|---|
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/download/security-releases/ | Vendor Advisory |
https://www.silverstripe.org/download/security-releases/cve-2020-25817 | Broken Link |
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/download/security-releases/ | Vendor Advisory |
https://www.silverstripe.org/download/security-releases/cve-2020-25817 | Broken Link |
Configurations
Configuration 1 (hide)
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History
21 Nov 2024, 05:18
Type | Values Removed | Values Added |
---|---|---|
References | () https://forum.silverstripe.org/c/releases - Release Notes, Vendor Advisory | |
References | () https://www.silverstripe.org/blog/tag/release - Release Notes, Vendor Advisory | |
References | () https://www.silverstripe.org/download/security-releases/ - Vendor Advisory | |
References | () https://www.silverstripe.org/download/security-releases/cve-2020-25817 - Broken Link |
Information
Published : 2021-06-08 18:15
Updated : 2024-11-21 05:18
NVD link : CVE-2020-25817
Mitre link : CVE-2020-25817
CVE.ORG link : CVE-2020-25817
JSON object : View
Products Affected
silverstripe
- silverstripe
CWE
CWE-611
Improper Restriction of XML External Entity Reference