Multiple vulnerabilities in vBulletin



Risk High
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2019-17271
CVE-2019-17132
CWE-ID CWE-89
CWE-94
Exploitation vector Network
Public exploit Public exploit code for vulnerability #2 is available.
Vulnerable software
 vBulletin
Web applications / Forum & blogging software

Vendor vBulletin

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) SQL injection

EUVDB-ID: #VU21601

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2019-17271

CWE-ID: CWE-89 - Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary SQL queries in database.

The vulnerability exists due to insufficient sanitization of user-supplied data passed via "where" parameter to "ajax/api/hook/getHookList" or "ajax/api/widget/getWidgetList" API endpoints. A remote authenticated attacker with "canadminproducts", "canadminstyles" (1) or "canusesitebuilder" (2) permissions can send a specially crafted request to the affected application and execute arbitrary SQL commands within the application database.

Successful exploitation of this vulnerability may allow a remote attacker to read, delete, modify data in database and gain complete control over the affected application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

vBulletin: 5.5.0 - 5.5.4

CPE2.3 External links

https://karmainsecurity.com/KIS-2019-01
https://seclists.org/fulldisclosure/2019/Oct/8


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated privileged user via the Internet.

Is there known malware, which exploits this vulnerability?

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

2) PHP Code Injection

EUVDB-ID: #VU21600

Risk: High

CVSSv4.0: 7.4 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Amber]

CVE-ID: CVE-2019-17132

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to improper input validation in the " ajax/api/user/updateAvatar" endpoint when processing data passed via the "data[filedata" HTTP POST parameter. A remote authenticated attacker can send a specially crafted request to the Avatar update script and execute arbitrary PHP code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

vBulletin: 5.5.0 - 5.5.4

CPE2.3 External links

https://forum.vbulletin.com/forum/vbulletin-announcements/vbulletin-announcements_aa/4423646-vbulletin-5-5-x-5-5-2-5-5-3-and-5-5-4-security-patch-level-2
https://karmainsecurity.com/pocs/CVE-2019-17132


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user 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.



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