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.
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
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsGroupSession Free edition: 5.1.1
GroupSession byCloud: 5.1.1
GroupSession ZION: 5.1.1
External linkshttp://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.
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
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsGroupSession Free edition: 5.1.1
GroupSession byCloud: 5.1.1
GroupSession ZION: 5.1.1
External linkshttp://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.
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
DescriptionThe 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.
MitigationInstall update from vendor's website.
Vulnerable software versionsGroupSession Free edition: 5.1.1
GroupSession byCloud: 5.1.1
GroupSession ZION: 5.1.1
External linkshttp://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.