CVE-2018-7753 Information

Description

An issue was discovered in Bleach 2.1.x before 2.1.3. Attributes that have URI values weren’t properly sanitized if the values contained character entities. Using character entities it was possible to construct a URI value with a scheme that was not allowed that would slide through unsanitized.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

https://bugs.debian.org/892252 https://github.com/mozilla/bleach/commit/c5df5789ec3471a31311f42c2d19fc2cf21b35ef https://github.com/mozilla/bleach/releases/tag/v2.1.3

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8