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CVE-2021-42306
CVE
Medium

An information disclosure vulnerability manifests when a user or an application uploads unprotected private key data as part of an authenti…

CVSS
6.5
Medium
EPSS
0.08
p92
Published
2021-01-01
Updated
2021-01-01
Description

An information disclosure vulnerability manifests when a user or an application uploads unprotected private key data as part of an authentication certificate keyCredential  on an Azure AD Application or Service Principal (which is not recommended). This vulnerability allows a user or service in the tenant with application read access to read the private key data that was added to the application. Azure AD addressed this vulnerability by preventing disclosure of any private key values added to the application. Microsoft has identified services that could manifest this vulnerability, and steps that customers should take to be protected. Refer to the FAQ section for more information. For more details on this issue, please refer to the MSRC Blog Entry.

Tags · CWE
CWE-522
CAPEC-50
CAPEC-102
CAPEC-474
CAPEC-509
CAPEC-551
CAPEC-555
CAPEC-560
CAPEC-561
CAPEC-600
CAPEC-644
CAPEC-645
CAPEC-652
CAPEC-653
Affected products
Azure_active_directory < 2021-10-30Azure_active_site_recovery < 2021-11-01Azure_automation < 2021-10-15Azure_migrate < 2021-11-02
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Timeline
2021-01-01
Published
2021-01-01
Updated
CVSS 3.1 breakdown
Attack Vector
AV: N
Network (N)
Attack Complexity
AC: L
Low (L)
Privileges Required
PR: L
Low (L)
User Interaction
UI: N
None (N)
Scope
S: U
Unchanged (U)
Confidentiality Impact
C: H
High (H)
Integrity Impact
I: N
None (N)
Availability Impact
A: N
None (N)
Exploit indicators
EPSS
0.082 · p92
Known exploited (KEV)
No
MITRE ATT&CK
Inferred via CAPEC
└ via CAPEC-555 · CWE-522
└ via CAPEC-561 · CWE-522
└ via CAPEC-560 · CWE-522
└ via CAPEC-600 · CWE-522
└ via CAPEC-555 · CWE-522
└ via CAPEC-555 · CWE-522
└ via CAPEC-551 · CWE-522
└ via CAPEC-644 · CWE-522
└ via CAPEC-645 · CWE-522
└ via CAPEC-474 · CWE-522
└ via CAPEC-652 · CWE-522
└ via CAPEC-509 · CWE-522
Known exploits — Сканер-ВС
No Сканер-ВС checks registered for this vulnerability yet.
Affected software
ProductVendorStatus
azure_active_directory*Tracked
azure_active_site_recovery*Tracked
azure_automation*Tracked
azure_migrate*Tracked
Source databases
CVE
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