CVE-2024-23635 AntiSamy malicious input can provoke XSS when preserving comments

2024-02-0216:32:50

CWE-79

GitHub_M

github.com

cve-2024-23635

antisamy

xss

preserved comments

CVSS3

6.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

AI Score

5.8

Confidence

High

SSVC

Exploitation

none

Automatable

Technical Impact

partial

JSON

AntiSamy is a library for performing fast, configurable cleansing of HTML coming from untrusted sources. Prior to 1.7.5, there is a potential for a mutation XSS (mXSS) vulnerability in AntiSamy caused by flawed parsing of the HTML being sanitized. To be subject to this vulnerability the preserveComments directive must be enabled in your policy file. As a result, certain crafty inputs can result in elements in comment tags being interpreted as executable when using AntiSamy’s sanitized output. Patched in AntiSamy 1.7.5 and later.

CNA Affected

[
  {
    "vendor": "nahsra",
    "product": "antisamy",
    "versions": [
      {
        "status": "affected",
        "version": "< 1.7.5"
      }
    ]
  }
]