CVE-2020-26237
Prototype Pollution in highlight.js
描述
Highlight.js is a syntax highlighter written in JavaScript. Highlight.js versions before 9.18.2 and 10.1.2 are vulnerable to Prototype Pollution. A malicious HTML code block can be crafted that will result in prototype pollution of the base object's prototype during highlighting. If you allow users to insert custom HTML code blocks into your page/app via parsing Markdown code blocks (or similar) and do not filter the language names the user can provide you may be vulnerable. The pollution should just be harmless data but this can cause problems for applications not expecting these properties to exist and can result in strange behavior or application crashes, i.e. a potential DOS vector. If your website or application does not render user provided data it should be unaffected. Versions 9.18.2 and 10.1.2 and newer include fixes for this vulnerability. If you are using version 7 or 8 you are encouraged to upgrade to a newer release.
如何修補 CVE-2020-26237
要修補 CVE-2020-26237,請將受影響套件升級到下列已修補版本。
- —升級至 9.18.1+dfsg1-3 或更新版本
- —升級至 8.2+ds-5+deb9u1 或更新版本
- —升級至 9.18.2 或更新版本
CVE-2020-26237 正在被利用嗎?
低 — EPSS 為 0.6%,目前沒有觀察到大規模利用活動。
受影響套件(3)
- from 0, < 9.18.1+dfsg1-3
- from 0, < 8.2+ds-5+deb9u1
- from 0, < 9.18.2
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.8 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:N/I:H/A:N |