CVE-2023-34104
fast-xml-parser vulnerable to Regex Injection via Doctype Entities
7.5
HIGH
CVSS 3.1
EPSS 1.1%
描述
### Impact "fast-xml-parser" allows special characters in entity names, which are not escaped or sanitized. Since the entity name is used for creating a regex for searching and replacing entities in the XML body, an attacker can abuse it for DoS attacks. By crafting an entity name that results in an intentionally bad performing regex and utilizing it in the entity replacement step of the parser, this can cause the parser to stall for an indefinite amount of time. ### Patches The problem has been resolved in v4.2.4 ### Workarounds Avoid using DOCTYPE parsing by `processEntities: false` option.
如何修補 CVE-2023-34104
要修補 CVE-2023-34104,請將受影響套件升級到下列已修補版本。
- —升級至 4.2.4 或更新版本
CVE-2023-34104 正在被利用嗎?
低 — EPSS 為 1.1%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- >= 4.1.3, < 4.2.4
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |