CVE-2020-25817

描述

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]).

如何修補 CVE-2020-25817

要修補 CVE-2020-25817,請將受影響套件升級到下列已修補版本。

• —升級至 4.6.0 或更新版本
• —升級至 4.7.4 或更新版本

CVE-2020-25817 正在被利用嗎?

低 — EPSS 為 0.8%,目前沒有觀察到大規模利用活動。

受影響套件(2)

• from 0, < 4.6.0 | >= 4.6.0-rc1, <= 4.6.0-rc1
• >= 4.0.0, < 4.7.4

CVSS 分數

參考連結(8)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2020-25817
• PATCHgithub.com/silverstripe/silverstripe-framework
• WEBforum.silverstripe.org/c/releases
• WEBwww.silverstripe.org/blog/tag/release
• WEB