Improper Neutralization of Special Elements in Output Used by a Downstream Component in phpBB - CVE-2019-16108

 

Improper Neutralization of Special Elements in Output Used by a Downstream Component in phpBB - CVE-2019-16108

Published: March 20, 2020 / Updated: August 8, 2020


Vulnerability identifier: #VU34714
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2019-16108
CWE-ID: CWE-74
Exploitation vector: Remote access
Exploit availability: No public exploit available
Vendor: phpBB Group
Affected software:
phpBB

Detailed vulnerability description

The vulnerability allows a remote non-authenticated attacker to manipulate data.

phpBB 3.2.7 allows adding an arbitrary Cascading Style Sheets (CSS) token sequence to a page through BBCode.


How to mitigate CVE-2019-16108

Install update from vendor's website.

Sources