Home/CVE/The Microsoft Teams online service contains a stored cross-site scripting vulnerability in the displayName parameter tha
CVE

CVE-2020-10146

The Microsoft Teams online service contains a stored cross-site scripting vulnerability in the displayName parameter tha

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.

MEDIUM · CVSS 5.7 EPSS 0.0052
Schedule remediation
  • Public exploit or PoC is available
Sigma rules5 YARA rules0
⬡

Weakness Classification

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
▤

Affected Products & Versions

1
microsoft teams< 2020-10-29
⚠

Public Exploits & PoCs

1
pocgithub.com · ms-teams-rcegithub.com
◈

Sigma Hunt Rules

5
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighMalicious DLL File Dropped in the Teams or OneDrive Folder
producthighSuspicious Teams Application Related ObjectAcess Event
productmediumMicrosoft Teams Sensitive File Access By Uncommon Applications
productmediumRenamed Microsoft Teams Execution
productmediumPotentially Suspicious Command Targeting Teams Sensitive Files
▣

Scoring & Timeline

5.7
MEDIUM · CVSS v3.1 · cret@cert.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD09 Dec 2020 · 01:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
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