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JpcertCVE-2021-20786

HistoryJul 30, 2021 - 2:15 p.m.

CVE-2021-20786

2021-07-3014:15:14

CWE-352

jpcert

web.nvd.nist.gov

cve-2021-20786

csrf

groupsession

vulnerability

hijacking

admin authentication

url

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS3

4.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

AI Score

5.2

Confidence

High

EPSS

0.001

Percentile

33.5%

JSON

Cross-site request forgery (CSRF) 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 attacker to hijack the authentication of administrators via a specially crafted URL.

Affected configurations

Nvd

Vulners

Node

groupsessiongroupsessionRange2.20–5.1.0free

groupsessiongroupsession_bycloudRange3.0.3–5.1.0

groupsessiongroupsession_zionRange3.0.3–5.1.0

VendorProductVersionCPE
groupsessiongroupsession*cpe:2.3:a:groupsession:groupsession:*:*:*:*:free:*:*:*
groupsessiongroupsession_bycloud*cpe:2.3:a:groupsession:groupsession_bycloud:*:*:*:*:*:*:*:*
groupsessiongroupsession_zion*cpe:2.3:a:groupsession:groupsession_zion:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
groupsession	groupsession	*	cpe:2.3:a:groupsession:groupsession:::::free:::*
groupsession	groupsession_bycloud	*	cpe:2.3:a:groupsession:groupsession_bycloud::::::::
groupsession	groupsession_zion	*	cpe:2.3:a:groupsession:groupsession_zion::::::::

CNA Affected

[
  {
    "product": "GroupSession",
    "vendor": "Japan Total System Co.,Ltd.",
    "versions": [
      {
        "status": "affected",
        "version": "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"
      }
    ]
  }
]

References

groupsession.jp/info/info-news/security202107

jvn.jp/en/jp/JVN86026700/index.html

Social References

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

AV:N/AC:M/Au:N/C:N/I:P/A:N

CVSS3

4.3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N

AI Score

5.2

Confidence

High

EPSS

0.001

Percentile

33.5%

JSON

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