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PRIOn knowledge basePRION:CVE-2021-1771

HistoryApr 02, 2021 - 6:15 p.m.

Design/Logic Flaw

2021-04-0218:15:00

PRIOn knowledge base

www.prio-n.com

3.3 Low

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

4.1 Medium

AI Score

Confidence

Low

4.3 Medium

CVSS2

Access Vector

NETWORK

Access 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

0.001 Low

EPSS

Percentile

20.5%

JSON

This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave. A user that is removed from an iMessage group could rejoin the group.

CPENameOperatorVersion
mac_os_xge10.15
mac_os_xlt10.15.7
mac_os_xge10.14
mac_os_xlt10.14.6
mac_os_xeq10.14.6
mac_os_xeq10.14.6
mac_os_xeq10.14.6
mac_os_xeq10.14.6
mac_os_xeq10.14.6
mac_os_xeq10.14.6

Name	Operator	Version
mac_os_x	ge	10.15
mac_os_x	lt	10.15.7
mac_os_x	ge	10.14
mac_os_x	lt	10.14.6
mac_os_x	eq	10.14.6
mac_os_x	eq	10.14.6
mac_os_x	eq	10.14.6
mac_os_x	eq	10.14.6
mac_os_x	eq	10.14.6
mac_os_x	eq	10.14.6

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References

support.apple.com/en-us/HT212147

3.3 Low

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

4.1 Medium

AI Score

Confidence

Low

4.3 Medium

CVSS2

Access Vector

NETWORK

Access 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

0.001 Low

EPSS

Percentile

20.5%

JSON

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