Vulnerability CVE-2021-1874

Vulnerability Name:

CVE-2021-1874 (CCN-200707)

Assigned:

2020-12-08

Published:

2021-04-26

Updated:

2021-09-20

Summary:

A logic issue was addressed with improved state management. This issue is fixed in iOS 14.5 and iPadOS 14.5. An application may be able to execute arbitrary code with kernel privileges.

CVSS v3 Severity:

8.8 High (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
7.7 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Network Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

7.8 High (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)
6.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C)

Exploitability Metrics:	Attack Vector (AV): Local Attack Complexity (AC): Low Privileges Required (PR): None User Interaction (UI): Required
Scope:	Scope (S): Unchanged
Impact Metrics:	Confidentiality (C): High Integrity (I): High Availibility (A): High

CVSS v2 Severity:

9.3 High (CVSS v2 Vector: AV:N/AC:M/Au:N/C:C/I:C/A:C)

Exploitability Metrics:	Access Vector (AV): Network Access Complexity (AC): Medium Authentication (Au): None
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

6.8 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:C/A:C)

Exploitability Metrics:	Access Vector (AV): Local Access Complexity (AC): Low Athentication (Au): Single_Instance
Impact Metrics:	Confidentiality (C): Complete Integrity (I): Complete Availibility (A): Complete

Vulnerability Type:

CWE-noinfo

Vulnerability Consequences:

Gain Privileges

References:

Source: MITRE
Type: CNA
CVE-2021-1874

Source: XF
Type: UNKNOWN
apple-ios-cve20211874-priv-esc(200707)

Source: CCN
Type: Apple security document HT212317
About the security content of iOS 14.5 and iPadOS 14.5

Source: MISC
Type: Vendor Advisory
https://support.apple.com/en-us/HT212317

Vulnerable Configuration:

Configuration 1:

cpe:/o:apple:ipados:*:*:*:*:*:*:*:* (Version < 14.5)

OR cpe:/o:apple:iphone_os:*:*:*:*:*:*:*:* (Version < 14.5)

Configuration CCN 1:

cpe:/o:apple:ios:14.4:*:*:*:*:*:*:*

OR cpe:/o:apple:ipados:14.4:*:*:*:*:*:*:*

Denotes that component is vulnerable

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