Multiple vulnerabilities in GroupSession



Published: 2022-01-04
Risk Medium
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2021-20876
CVE-2021-20874
CVE-2021-20875
CWE-ID CWE-732
CWE-601
CWE-22
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe
GroupSession Free edition
Client/Desktop applications / Other client software

GroupSession byCloud
Client/Desktop applications / Other client software

GroupSession ZION
Client/Desktop applications / Other client software

Vendor Japan Total System

Security Bulletin

This security bulletin contains information about 3 vulnerabilities.

1) Incorrect permission assignment for critical resource

EUVDB-ID: #VU59176

Risk: Medium

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

CVE-ID: CVE-2021-20876

CWE-ID: CWE-732 - Incorrect Permission Assignment for Critical Resource

Exploit availability: No

Description

The vulnerability allows a remote attacker to disclose sensitive information.

The vulnerability exists due to incorrect permission assignment for critical resource. A remote attacker can gain access to sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

GroupSession Free edition: 5.1.1

GroupSession byCloud: 5.1.1

GroupSession ZION: 5.1.1

External links

http://groupsession.jp/info/info-news/security20211220
http://jvn.jp/en/jp/JVN79798166/index.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) Open redirect

EUVDB-ID: #VU59177

Risk: Medium

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

CVE-ID: CVE-2021-20874

CWE-ID: CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

Exploit availability: No

Description

The vulnerability allows a remote attacker to redirect victims to arbitrary URL.

The vulnerability exists due to improper sanitization of user-supplied data. A remote attacker can create a link that leads to a trusted website, however, when clicked, redirects the victim to arbitrary domain.

Successful exploitation of this vulnerability may allow a remote attacker to perform a phishing attack and steal potentially sensitive information.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

GroupSession Free edition: 5.1.1

GroupSession byCloud: 5.1.1

GroupSession ZION: 5.1.1

External links

http://groupsession.jp/info/info-news/security20211220
http://jvn.jp/en/jp/JVN79798166/index.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) Path traversal

EUVDB-ID: #VU59178

Risk: Low

CVSSv3.1: 4.3 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-20875

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote user to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote administrator can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

GroupSession Free edition: 5.1.1

GroupSession byCloud: 5.1.1

GroupSession ZION: 5.1.1

External links

http://groupsession.jp/info/info-news/security20211220
http://jvn.jp/en/jp/JVN79798166/index.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.



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