Vulnerability Report

CVE-2020-25817

Title: Silverstripe XML External Entity (XXE)

XML External Entity (XXE)

Proof Of Concept

No public PoC currently indexed for CVE-2020-25817.

CWE Category CWE-611

Published Date Jun 08, 2021

Modified Date Nov 21, 2024

Exploit Status Not Found

Score 4.8 CVSS v3.1

Exploit Probability (EPSS)

0.35%

Vulnerability Summary

CVE-2020-25817: 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]).

Impacted Vendors

silverstripe 1

Reference Links

https://forum.silverstripe.org/c/releases https://www.silverstripe.org/blog/tag/release https://www.silverstripe.org/download/security-releases/ https://www.silverstripe.org/download/security-releases/cve-2020-25817 https://forum.silverstripe.org/c/releases https://www.silverstripe.org/blog/tag/release https://www.silverstripe.org/download/security-releases/ https://www.silverstripe.org/download/security-releases/cve-2020-25817

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

4.8

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

REQUIRED

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

CHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

CVSS v2.0

Source Entity [email protected]

Severity LOW

3.5

Access Vector

N/A

Authentication

N/A

RAW VECTOR AV:N/AC:M/Au:S/C:N/I:P/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2020-25817 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

November 21, 2024 MODIFIED

Vulnerability data or affected products updated.

June 08, 2021 PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction REQUIRED

CVSS Vector String


                                    CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Affected Stack

No specific products linked.