CVE-2020-25817
SilverStripe XXE Vulnerability in CSSContentParser
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]).
INFO
Published Date :
June 8, 2021, 6:15 p.m.
Last Modified :
June 17, 2021, 3:47 p.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
2.7
Exploitability Score :
1.7
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2020-25817.
| URL | 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 |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2020-25817 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2020-25817 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Jun. 17, 2021
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:N/AC:M/Au:S/C:N/I:P/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N Changed Reference Type https://forum.silverstripe.org/c/releases No Types Assigned https://forum.silverstripe.org/c/releases Release Notes, Vendor Advisory Changed Reference Type https://www.silverstripe.org/blog/tag/release No Types Assigned https://www.silverstripe.org/blog/tag/release Release Notes, Vendor Advisory Changed Reference Type https://www.silverstripe.org/download/security-releases/ No Types Assigned https://www.silverstripe.org/download/security-releases/ Vendor Advisory Changed Reference Type https://www.silverstripe.org/download/security-releases/cve-2020-25817 No Types Assigned https://www.silverstripe.org/download/security-releases/cve-2020-25817 Broken Link Added CWE NIST CWE-611 Added CPE Configuration OR *cpe:2.3:a:silverstripe:silverstripe:*:*:*:*:*:*:*:* versions up to (excluding) 4.6.0 *cpe:2.3:a:silverstripe:silverstripe:4.6.0:rc1:*:*:*:*:*:* -
CVE Modified by [email protected]
Jun. 08, 2021
Action Type Old Value New Value Removed Reference https://www.silverstripe.org/download/security-releases/cve-2021-25817-xxe-vulnerability-in-css-contentparser [No Types Assigned] Added Reference https://www.silverstripe.org/download/security-releases/cve-2020-25817 [No Types Assigned]
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2020-25817 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2020-25817
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.10 }} -0.00%
score
0.40584
percentile