CVE-2021-39345

medium
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Description

The HAL WordPress plugin is vulnerable to Stored Cross-Site Scripting due to insufficient input validation and sanitization via several parameters found in the ~/wp-hal.php file which allowed attackers with administrative user access to inject arbitrary web scripts, in versions up to and including 2.1.1. This affects multi-site installations where unfiltered_html is disabled for administrators, and sites where unfiltered_html is disabled.

References

https://github.com/BigTiger2020/word-press/blob/main/HAL.md

https://www.wordfence.com/vulnerability-advisories/#CVE-2021-39345

https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=2614075%40hal&new=2614075%40hal&sfp_email=&sfph_mail=

Details

Source: MITRE

Published: 2021-10-15

Updated: 2021-10-20

Type: CWE-79

Risk Information

CVSS v2

Base Score: 2.1

Vector: AV:N/AC:H/Au:S/C:N/I:P/A:N

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 4.8

Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

Impact Score: 2.7

Exploitability Score: 1.7

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:cnrs:hal:*:*:*:*:*:wordpress:*:* versions up to 2.1.1 (inclusive)