An issue was discovered in the stripTags and unescapeHTML components in Prototype 1.7.3 where an attacker can cause a Regular Expression Denial of Service (ReDOS) through stripping crafted HTML tags.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Prototype | Prototypejs | 1.7.3 (including) | 1.7.3 (including) |
| Prototypejs | Ubuntu | bionic | * |
| Prototypejs | Ubuntu | focal | * |
| Prototypejs | Ubuntu | groovy | * |
| Prototypejs | Ubuntu | hirsute | * |
| Prototypejs | Ubuntu | impish | * |
| Prototypejs | Ubuntu | kinetic | * |
| Prototypejs | Ubuntu | lunar | * |
| Prototypejs | Ubuntu | mantic | * |
| Prototypejs | Ubuntu | oracular | * |
| Prototypejs | Ubuntu | plucky | * |
| Prototypejs | Ubuntu | trusty | * |
| Prototypejs | Ubuntu | xenial | * |
References
- http://prototypejs.org/
- https://github.com/prototypejs/prototype/blob/dee2f7d8611248abce81287e1be4156011953c90/src/prototype/lang/string.js#L283
- https://github.com/yetingli/PoCs/blob/main/CVE-2020-27511/Prototype.md
- http://prototypejs.org/
- https://github.com/prototypejs/prototype/blob/dee2f7d8611248abce81287e1be4156011953c90/src/prototype/lang/string.js#L283
- https://github.com/yetingli/PoCs/blob/main/CVE-2020-27511/Prototype.md