Multiple vulnerabilities in Joomla!

Published: 2023-05-30

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2023-23755 CVE-2023-23754
CWE-ID	CWE-799 CWE-79
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Joomla! Web applications / CMS
Vendor	Joomla!

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Improper control of interaction frequency

EUVDB-ID: #VU76654

Risk: Low

CVSSv3.1: 4.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-23755

CWE-ID: CWE-799 - Improper Control of Interaction Frequency

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform brute-force attack.

The vulnerability exists due to missing rate limitation checks within the mfa screen. A remote attacker can perform brute-force attacks against MFA methods.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Joomla!: 4.2.0 - 4.3.1

External links

http://developer.joomla.org/security-centre/900-20230502-core-bruteforce-prevention-within-the-mfa-screen.html

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Cross-site scripting

EUVDB-ID: #VU76653

Risk: Medium

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-23754

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')