Multiple vulnerabilities in Joomla!



Risk Low
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2018-15880
CVE-2018-15881
CVE-2018-15882
CWE-ID CWE-79
CWE-264
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Joomla!
Web applications / CMS

Vendor Joomla!

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Stored cross-site scripting

EUVDB-ID: #VU14556

Risk: Low

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

CVE-ID: CVE-2018-15880

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

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform stored cross-site scripting (XSS) attacks.

The vulnerability exists in the frontend profile due to inadequate output filtering on the user profile page. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in 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

Update to version 3.8.12.

Vulnerable software versions

Joomla!: 1.5 - 3.8.11

CPE2.3 External links

https://developer.joomla.org/security-centre.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) Security restrictions bypass

EUVDB-ID: #VU14557

Risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-15881

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to bypass security restrictions.

The vulnerability exists in custom fields due to inadequate checks regarding disabled fields. A remote attacker can supply specially crafted fields, bypass security restrictions and violate ACL in custom fields.

Mitigation

Update to version 3.8.12.

Vulnerable software versions

Joomla!: 3.7.0 - 3.8.11

CPE2.3 External links

https://developer.joomla.org/security-centre.html


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.

3) Security restrictions bypass

EUVDB-ID: #VU14558

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-15882

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to bypass security restrictions.

The vulnerability exists due to inadequate checks in the InputFilter class. A remote attacker can use specifically prepared PHAR files to bypass the upload filter.

Mitigation

Update to version 3.8.12.

Vulnerable software versions

Joomla!: 1.5 - 3.8.11

CPE2.3 External links

https://developer.joomla.org/security-centre.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.



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