Multiple vulnerabilities in Joomla!



Published: 2018-05-22 | Updated: 2018-05-23
Risk Low
Patch available YES
Number of vulnerabilities 9
CVE-ID CVE-2018-6378
CVE-2018-11323
CVE-2018-11322
CVE-2018-11327
CVE-2018-11325
CVE-2018-11326
CVE-2018-11321
CVE-2018-11324
CVE-2018-11328
CWE-ID CWE-79
CWE-264
CWE-434
CWE-200
CWE-94
CWE-362
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Web applications / CMS

Vendor Joomla!

Security Bulletin

This security bulletin contains information about 9 vulnerabilities.

1) Cross-site scripting

EUVDB-ID: #VU12978

Risk: Low

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-2018-6378

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 cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data passed via file and folder names in media manager. 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 3.8.8.

Vulnerable software versions

Joomla!: 1.5.0 - 3.8.7

External links

http://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) Improper access control

EUVDB-ID: #VU12986

Risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-11323

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to violate security restrictions.

The vulnerability exists due to improper validation of permissions within the application. A remote authenticated attacker can modify the access levels of user groups with higher permissions.

Mitigation

Update to version 3.8.8.

Vulnerable software versions

Joomla!: 2.5.0 - 3.8.7

External links

http://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) Unrestricted upload of file with dangerous type

EUVDB-ID: #VU12985

Risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-11322

CWE-ID: CWE-434 - Unrestricted Upload of File with Dangerous Type

Exploit availability: No

Description

The vulnerability allows a remote attacker to upload dangerous files on the server.

The vulnerability exists due to the web application allows uploading of PHAR files that can be treated in certain web server configuration as PHP executable files. A remote attacker can upload a PHAR file and execute arbitrary PHP code on the target system.

Mitigation

Update to version 3.8.8.

Vulnerable software versions

Joomla!: 2.5.0 - 3.8.7

External links

http://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.

4) Information disclosure

EUVDB-ID: #VU12984

Risk: Low

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-11327

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to view unpublished tags.

The vulnerability exists due to web application allows a remote attacker to see names of tags that were not published yet or have restricted access.

Mitigation

Update to version 3.8.8.

Vulnerable software versions

Joomla!: 3.1.0 - 3.8.7

External links

http://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.

5) Information disclosure

EUVDB-ID: #VU12983

Risk: Low

CVSSv3.1: 2.1 [CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-11325

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a local user to gain access to administrator's password.
The vulnerability exists due to the web install application automatically fills-in password fields after either a form validation error or navigating to a previous install step, and displays the plain text password for the administrator account at the confirmation screen.

Mitigation

Update to version 3.8.8.

Vulnerable software versions

Joomla!: 3.0.0 - 3.8.7

External links

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


Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

6) Cross-site scripting

EUVDB-ID: #VU12982

Risk: Low

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-2018-11326

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 cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data. 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 3.8.8.

Vulnerable software versions

Joomla!: 3.0.0 - 3.8.7

External links

http://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.

7) Code injection

EUVDB-ID: #VU12981

Risk: Low

CVSSv3.1: 4.1 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-11321

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

Exploit availability: No

Description

The vulnerability allows a remote authenticated attacker to inject and execute arbitrary code.

The vulnerability exists due to improper validation of user-supplied data in com_fields core component. A remote authenticated attacker with privileges to create custom fields can inject an unvalidated option.

Mitigation

Upgrade to version 3.8.8.

Vulnerable software versions

Joomla!: 3.7.0 - 3.8.7

External links

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


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.

8) Race condition

EUVDB-ID: #VU12980

Risk: Low

CVSSv3.1: 4.9 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-11324

CWE-ID: CWE-362 - Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform session fixation attacks.

The vulnerability exists due to a race condition, related to background process when destroying user's session. A remote attacker can create a race condition that and re-use victim's session identifier.

Mitigation

Update to version 3.8.8.

Vulnerable software versions

Joomla!: 3.0.0 - 3.8.7

External links

http://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.

9) Cross-site scripting

EUVDB-ID: #VU12979

Risk: Low

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-2018-11328

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 cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data during user redirect with a URI containing a username and password when the Location: header cannot be used. 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 3.8.8.

Vulnerable software versions

Joomla!: 3.1.2 - 3.8.7

External links

http://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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