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CertccCVE-2020-10146

HistoryDec 09, 2020 - 1:15 a.m.

CVE-2020-10146

2020-12-0901:15:12

CWE-79

certcc

web.nvd.nist.gov

124

microsoft teams

xss

vulnerability

stored xss

displayname parameter

online service

security

nvd

cve-2020-10146

CVSS2

3.5

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

5.7

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

5.8

Confidence

High

EPSS

0.001

Percentile

26.7%

JSON

The Microsoft Teams online service contains a stored cross-site scripting vulnerability in the displayName parameter that can be exploited on Teams clients to obtain sensitive information such as authentication tokens and to possibly execute arbitrary commands. This vulnerability was fixed for all Teams users in the online service on or around October 2020.

Affected configurations

Nvd

Node

microsoftteamsRange<2020-10-29

VendorProductVersionCPE
microsoftteams*cpe:2.3:a:microsoft:teams:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
microsoft	teams	*	cpe:2.3:a:microsoft:teams::::::::

CNA Affected

[
  {
    "product": "Teams",
    "vendor": "Microsoft",
    "versions": [
      {
        "lessThan": "on or about October 2020",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]

References

github.com/oskarsve/ms-teams-rce

CVSS2

3.5

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

SINGLE

Confidentiality Impact

NONE

Integrity Impact

PARTIAL

Availability Impact

NONE

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

CVSS3

5.7

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

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

AI Score

5.8

Confidence

High

EPSS

0.001

Percentile

26.7%

JSON

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