5.4 - CVE-2023-34461

Executive Summary

Informations
Name	CVE-2023-34461	First vendor Publication	2023-06-19
Vendor	Cve	Last vendor Modification	2024-11-21

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Overall CVSS Score	5.4
Base Score	5.4	Environmental Score	5.4
impact SubScore	2.7	Temporal Score	5.4
Exploitabality Sub Score	2.3

Attack Vector	Network	Attack Complexity	Low
Privileges Required	Low	User Interaction	Required
Scope	Changed	Confidentiality Impact	Low
Integrity Impact	Low	Availability Impact	None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector :
Cvss Base Score	N/A	Attack Range	N/A
Cvss Impact Score	N/A	Attack Complexity	N/A
Cvss Expoit Score	N/A	Authentication	N/A
Calculate full CVSS 2.0 Vectors scores

Detail

PyBB is an open source bulletin board. A manual code review of the PyBB bulletin board server has revealed that a vulnerability could have been exploited in which users could submit any type of HTML tag, and have said tag run. For example, a malicious `` that looks like ```xss``` could have been used to run code through JavaScript on the client side. The problem has been patched as of commit `5defd92`, and users are advised to upgrade. Attackers do need posting privilege in order to exploit this vulnerability. This vulnerability is present within the 0.1.0 release, and users are advised to upgrade to 0.1.1. Users unable to upgrade may be able to work around the attack by either; Removing the ability to create posts, removing the `|safe` tag from the Jinja2 template titled "post.html" in templates or by adding manual validation of links in the post creation section.