Vulnerability Details : CVE-2021-20788
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.
Vulnerability category: Server-side request forgery (SSRF)
Products affected by CVE-2021-20788
- cpe:2.3:a:groupsession:groupsession:*:*:*:*:free:*:*:*
- cpe:2.3:a:groupsession:groupsession_bycloud:*:*:*:*:*:*:*:*
- cpe:2.3:a:groupsession:groupsession_zion:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-20788
0.07%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 34 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-20788
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.0
|
MEDIUM | AV:N/AC:L/Au:S/C:P/I:N/A:N |
8.0
|
2.9
|
NIST | |
|
4.3
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
2.8
|
1.4
|
NIST |
CWE ids for CVE-2021-20788
-
The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-20788
-
https://groupsession.jp/info/info-news/security202107
Vendor Advisory
-
https://jvn.jp/en/jp/JVN86026700/index.html
JVN#86026700: Multiple vulnerabilities in GroupSessionThird Party Advisory
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