Multiple vulnerabilities in ManageEngine ADSelfService Plus

1) Stored cross-site scripting

EUVDB-ID: #VU53430

Risk: Low

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

CVE-ID: CVE-2021-27956

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 in the "/webclient/index.html#/directory-search" page. A remote attacker can inject 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 update from vendor's website.

Vulnerable software versions

Zoho ManageEngine ADSelfService Plus: 6100 - 6103

External links

http://pitstop.manageengine.com/portal/en/community/topic/adselfservice-plus-6104-released-with-an-important-security-fixes
http://raxis.com/blog/cve-2021-27956-manage-engine-xss
http://www.manageengine.com

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) Information disclosure

EUVDB-ID: #VU56258

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-31874

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application. A remote attacker can obtain sensitive information about the password-sync database application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Zoho ManageEngine ADSelfService Plus: 6000 - 6103

External links

http://pitstop.manageengine.com/portal/en/community/topic/adselfservice-plus-6104-released-with-an-important-security-fixes

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) Improper Authorization

EUVDB-ID: #VU56257

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-37421

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No

Description

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

The vulnerability exists due to an error when handling the X-Forwarded-For HTTP header information while accessing the admin portal, if access restrictions are based on IP addresses. A remote attacker can pass an IP address from the whitelist via the X-Forwarded-For HTTP header while accessing the web interface from another IP address, bypass IP-based access restrictions and gain unauthorized access to the admin web interface.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Zoho ManageEngine ADSelfService Plus: 6000 - 6103

External links

http://blog.stmcyber.com/vulns/cve-2021-37421/
http://pitstop.manageengine.com/portal/en/community/topic/adselfservice-plus-6104-released-with-an-important-security-fixes

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) Cross-site scripting

EUVDB-ID: #VU56255

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-2021-37416

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 on the loadframe 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

Install updates from vendor's website.

Vulnerable software versions

Zoho ManageEngine ADSelfService Plus: 6000 - 6103

External links

http://blog.stmcyber.com/vulns/cve-2021-37416/
http://pitstop.manageengine.com/portal/en/community/topic/adselfservice-plus-6104-released-with-an-important-security-fixes

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) Improper control of interaction frequency

EUVDB-ID: #VU56256

Risk: Low

CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-37417

CWE-ID: CWE-799 - Improper Control of Interaction Frequency

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass CAPTCHA.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can bypass CAPTCHA protection on the login page and perform brute-force attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Zoho ManageEngine ADSelfService Plus: 6000 - 6103

External links

http://blog.stmcyber.com/vulns/cve-2021-37417/
http://pitstop.manageengine.com/portal/en/community/topic/adselfservice-plus-6104-released-with-an-important-security-fixes

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.