Multiple vulnerabilities in Six Apart Movable Type

Published: 2020-05-14

Risk	Medium
Patch available	YES
Number of vulnerabilities	4
CVE-ID	CVE-2020-5574 CVE-2020-5575 CVE-2020-5576 CVE-2020-5577
CWE-ID	CWE-74 CWE-79 CWE-352 CWE-434
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Movable Type Web applications / CMS Movable Type Advanced Web applications / CMS Movable Type for AWS Web applications / CMS Movable Type Premium Web applications / CMS Movable Type Premium Advanced Web applications / CMS
Vendor	Six Apart Ltd

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Improper Neutralization of Special Elements in Output Used by a Downstream Component

EUVDB-ID: #VU27916

Risk: Medium

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

CVE-ID: CVE-2020-5574

CWE-ID: CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cache poisoning attack.

The vulnerability exists due to improper input validation of HTML code. A remote attacker can send a specially crated request and inject arbitrary HTML attribute value.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Movable Type: 6.3 - 7.2.1

Movable Type Advanced: 6.3 - 7.2.1

Movable Type for AWS: 7.0.1 - 7.2.1

Movable Type Premium: 1.29

Movable Type Premium Advanced: 1.29

External links

http://jvn.jp/en/jp/JVN28806943/index.html
http://movabletype.org/news/2020/05/mt-730-660-6312-released.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: #VU27917

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-2020-5575

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

Install updates from vendor's website.

Vulnerable software versions

Movable Type: 6.3 - 7.2.1

Movable Type Advanced: 6.3 - 7.2.1

Movable Type for AWS: 7.0.1 - 7.2.1

Movable Type Premium: 1.29

Movable Type Premium Advanced: 1.29

External links

http://jvn.jp/en/jp/JVN28806943/index.html
http://movabletype.org/news/2020/05/mt-730-660-6312-released.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.

3) Cross-site request forgery

EUVDB-ID: #VU27918

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-2020-5576

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Movable Type: 6.3 - 7.2.1

Movable Type Advanced: 6.3 - 7.2.1

Movable Type for AWS: 7.0.1 - 7.2.1

Movable Type Premium: 1.29

Movable Type Premium Advanced: 1.29

External links

http://jvn.jp/en/jp/JVN28806943/index.html
http://movabletype.org/news/2020/05/mt-730-660-6312-released.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.

4) Arbitrary file upload

EUVDB-ID: #VU27919

Risk: Medium

CVSSv3.1: 7.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-5577

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

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to insufficient validation of file during file upload. A remote authenticated attacker can upload a malicious file and execute it on the server.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Movable Type: 6.3 - 7.2.1

Movable Type Advanced: 6.3 - 7.2.1

Movable Type for AWS: 7.0.1 - 7.2.1

Movable Type Premium: 1.29

Movable Type Premium Advanced: 1.29

External links

http://jvn.jp/en/jp/JVN28806943/index.html
http://movabletype.org/news/2020/05/mt-730-660-6312-released.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.