Vulnerability Report

CVE-2023-38500

Title: XSS Bypass in TYPO3 HTML Sanitizer

XSS

Proof Of Concept

No public PoC currently indexed for CVE-2023-38500.

CWE Category CWE-79
Published Date Jul 25, 2023
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 4.7 CVSS v3.1
Exploit Probability (EPSS)
0.43%

Vulnerability Summary

CVE-2023-38500: 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.

Impacted Vendors

T
typo3 1
R
rubyonrails 1

Reference Links

https://github.com/TYPO3/html-sanitizer/commit/e3026f589fef0be8c3574ee3f0a0bfbe33d7ebdb https://github.com/TYPO3/html-sanitizer/security/advisories/GHSA-59jf-3q9v-rh6g https://typo3.org/security/advisory/typo3-core-sa-2023-002 https://github.com/TYPO3/html-sanitizer/commit/e3026f589fef0be8c3574ee3f0a0bfbe33d7ebdb https://github.com/TYPO3/html-sanitizer/security/advisories/GHSA-59jf-3q9v-rh6g https://typo3.org/security/advisory/typo3-core-sa-2023-002
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
4.7
Attack Vector
NETWORK
Complexity
HIGH
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
6.1
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
CHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2023-38500 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity HIGH
Privileges N/A
Interaction REQUIRED
CVSS Vector String CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected Stack

No specific products linked.