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ubuntucveUbuntu.comUB:CVE-2023-38500
HistoryJul 25, 2023 - 12:00 a.m.

CVE-2023-38500

2023-07-2500:00:00
ubuntu.com
ubuntu.com
82
typo3 html sanitizer
php
encoding issue
xss bypass
noscript element

6.1 Medium

CVSS3

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

0.001 Low

EPSS

Percentile

33.7%

TYPO3 HTML Sanitizer is an HTML sanitizer, written in PHP, aiming to
provide cross-site-scripting-safe markup based on explicitly allowed tags,
attributes and values. Starting in version 1.0.0 and prior to versions
1.5.1 and 2.1.2, due to an encoding issue in the serialization layer,
malicious markup nested in a noscript element was not encoded correctly.
noscript is disabled in the default configuration, but might have been
enabled in custom scenarios. This allows bypassing the cross-site scripting
mechanism of TYPO3 HTML Sanitizer. Versions 1.5.1 and 2.1.2 fix the
problem.

6.1 Medium

CVSS3

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

0.001 Low

EPSS

Percentile

33.7%