Multiple vulnerabilities in Z-BlogPHP

Published: 2018-04-16 | Updated: 2018-09-08

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2018-9169 CVE-2018-8893
CWE-ID	CWE-79 CWE-352
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available. Public exploit code for vulnerability #2 is available.
Vulnerable software Subscribe	Z-BlogPHP Web applications / Forum & blogging software
Vendor	Z-Blogcn

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Cross-site scripting

EUVDB-ID: #VU14715

Risk: Low

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2018-9169

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

Exploit availability: No

Description

Vulnerability allows a remote attacker to perform XSS attacks.

The vulnerability is caused by an input validation error in the app_id parameter in zb_users/plugin/AppCentre/plugin_edit.php script. A remote attacker can trick the victim to follow a specially specially crafted link and execute arbitrary HTML and script code in victim's browser in security context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Z-BlogPHP: 1.5.1

External links

http://xz.aliyun.com/t/2277

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. However, proof of concept for this vulnerability is available.

2) Cross-site request forgery

EUVDB-ID: #VU14716

Risk: Medium