CVE Vulnerability

CVE-2020-27511

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.

5 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 10 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact PARTIAL

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
http://prototypejs.org/ Vendor Advisory
https://github.com/yetingli/PoCs/blob/main/CVE-2020-27511/Prototype.md Exploit Third Party Advisory
https://github.com/prototypejs/prototype/blob/dee2f7d8611248abce81287e1be4156011953c90/src/prototype/lang/string.js#L283 Exploit Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:prototypejs:prototype:1.7.3:*:*:*:*:*:*:*
Information

Published : 2021-06-21 08:15

Updated : 2021-09-20 05:09

NVD link : CVE-2020-27511

Mitre link : CVE-2020-27511

Products Affected

Prototype

Prototypejs

CWE
NVD-CWE-noinfo