CVE-2021-20788
Quick assessment
Affected
Japan Total System Co.,Ltd. GroupSession
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Japan Total System GroupSession是日本Japan Total System公司的一个群件项目，以方便企业和组织的沟通，旨在促进信息共享。 Total System GroupSession 存在代码问题漏洞，可以访问软件书签功能的用户可以对产品进行端口扫描或从内部 Web 服务器获取信息。
Possible ATT&CK Techniques 2 AI
T1046 · Network Service Discovery T1590 · Gather Victim Network Information
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I. Basic Information for CVE-2021-20788
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Server-side request forgery (SSRF) vulnerability in GroupSession (GroupSession Free edition from ver2.2.0 to the version prior to ver5.1.0, GroupSession byCloud from ver3.0.3 to the version prior to ver5.1.0, and GroupSession ZION from ver3.0.3 to the version prior to ver5.1.0) allows a remote authenticated attacker to conduct a port scan from the product and/or obtain information from the internal Web server.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Japan Total System GroupSession 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Japan Total System GroupSession是日本Japan Total System公司的一个群件项目，以方便企业和组织的沟通，旨在促进信息共享。 Total System GroupSession 存在代码问题漏洞，可以访问软件书签功能的用户可以对产品进行端口扫描或从内部 Web 服务器获取信息。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Japan Total System Co.,Ltd. | GroupSession | GroupSession Free edition from ver2.2.0 to the version prior to ver5.1.0, GroupSession byCloud from ver3.0.3 to the version prior to ver5.1.0, and GroupSession ZION from ver3.0.3 to the version prior to ver5.1.0 | - |
|
II. Public POCs for CVE-2021-20788
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2021-20788 (1)
-
https://jvn.jp/en/jp/JVN86026700/index.html x_refsource_MISC
Other References for CVE-2021-20788 (1)
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https://groupsession.jp/info/info-news/security202107 x_refsource_MISC
Same Patch Batch · Japan Total System Co.,Ltd. · 2021-07-28 · 5 CVEs total
| CVE-2021-20785 | Japan Total System GroupSession 跨站脚本漏洞 | |
| CVE-2021-20786 | Japan Total System GroupSession 跨站请求伪造漏洞 | |
| CVE-2021-20787 | Japan Total System GroupSession 跨站脚本漏洞 | |
| CVE-2021-20789 | Japan Total System GroupSession 输入验证错误漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2021-20788
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