CVE-2020-14000
CRITICAL9.8EPSS 6.6%Remote Code Execution in scratch-vm
發布日:2020/7/27修改日:2023/11/8
描述
MIT Lifelong Kindergarten Scratch scratch-vm before `0.2.0-prerelease.20200714185213` loads extension URLs from untrusted project.json files with certain `_` characters, resulting in remote code execution because the URL's content is treated as a script and is executed as a worker. The responsible code is `getExtensionIdForOpcode` in serialization/sb3.js. The use of `_` is incompatible with a protection mechanism in older versions, in which URLs were split and consequently deserialization attacks were prevented. **NOTE**: the scratch.mit.edu hosted service is not affected because of the lack of worker scripts.
受影響套件(1)
- npm/scratch-vmfrom 0, < 0.2.0-prerelease.20200714185213
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | CRITICAL9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
參考連結(5)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2020-14000
- PATCHhttps://github.com/LLK/scratch-vm
- WEBhttps://github.com/LLK/scratch-vm/pull/2476
- WEBhttps://github.com/LLK/scratch-vm/pull/2476/commits/90b9da45f4084958535338d1c4d71a22d6136aab
- WEBhttps://scratch.mit.edu/discuss/topic/422904/?page=1#post-4223443