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cvePivotalCVE-2020-5425
HistoryOct 31, 2020 - 10:15 p.m.

CVE-2020-5425

2020-10-3122:15:11
CWE-287
pivotal
web.nvd.nist.gov
31
cve-2020-5425
sso
vmware tanzu
user impersonation
vulnerability
identity provider
saml
ldap
nvd

CVSS2

4.6

Attack Vector

NETWORK

Attack Complexity

HIGH

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:H/Au:S/C:P/I:P/A:P

CVSS3

7.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.6

Confidence

High

EPSS

0.001

Percentile

35.0%

Single Sign-On for Vmware Tanzu all versions prior to 1.11.3 ,1.12.x versions prior to 1.12.4 and 1.13.x prior to 1.13.1 are vulnerable to user impersonation attack.If two users are logged in to the SSO operator dashboard at the same time, with the same username, from two different identity providers, one can acquire the token of the other and thus operate with their permissions. Note: Foundation may be vulnerable only if: 1) The system zone is set up to use a SAML identity provider 2) There are internal users that have the same username as users in the external SAML provider 3) Those duplicate-named users have the scope to access the SSO operator dashboard 4) The vulnerability doesn’t appear with LDAP because of chained authentication.

Affected configurations

Nvd
Node
vmwaresingle_sign-on_for_tanzuRange<1.11.3
OR
vmwaresingle_sign-on_for_tanzuRange1.12.01.12.4
OR
vmwaresingle_sign-on_for_tanzuRange1.13.01.13.1
VendorProductVersionCPE
vmwaresingle_sign-on_for_tanzu*cpe:2.3:a:vmware:single_sign-on_for_tanzu:*:*:*:*:*:*:*:*

CNA Affected

[
  {
    "product": "Single Sign-On for VMware Tanzu",
    "vendor": "VMware Tanzu",
    "versions": [
      {
        "lessThan": "1.11.3",
        "status": "affected",
        "version": "1.11",
        "versionType": "custom"
      },
      {
        "lessThan": "1.12.4",
        "status": "affected",
        "version": "1.12",
        "versionType": "custom"
      },
      {
        "lessThan": "1.13.1",
        "status": "affected",
        "version": "1.13",
        "versionType": "custom"
      }
    ]
  }
]

CVSS2

4.6

Attack Vector

NETWORK

Attack Complexity

HIGH

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:H/Au:S/C:P/I:P/A:P

CVSS3

7.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

HIGH

Availability Impact

HIGH

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

AI Score

7.6

Confidence

High

EPSS

0.001

Percentile

35.0%

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