| Vulnerability Name: | CVE-2021-1877 (CCN-200704) |
| Assigned: | 2020-12-08 |
| Published: | 2021-04-26 |
| Updated: | 2021-09-20 |
| Summary: | An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 14.5 and iPadOS 14.5. A local user may be able to read kernel memory.
|
| CVSS v3 Severity: | 5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C)| Exploitability Metrics: | Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None | | Scope: | Scope (S): Unchanged
| | Impact Metrics: | Confidentiality (C): High
Integrity (I): None
Availibility (A): None |
5.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N)
4.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/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): None
Availibility (A): None |
|
| CVSS v2 Severity: | 4.9 Medium (CVSS v2 Vector: AV:L/AC:L/Au:N/C:C/I:N/A:N)| Exploitability Metrics: | Access Vector (AV): Local
Access Complexity (AC): Low
Authentication (Au): None | | Impact Metrics: | Confidentiality (C): Complete
Integrity (I): None
Availibility (A): None |
4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:C/I:N/A:N)| Exploitability Metrics: | Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
| | Impact Metrics: | Confidentiality (C): Complete
Integrity (I): None
Availibility (A): None |
|
| Vulnerability Type: | CWE-125
|
| Vulnerability Consequences: | Obtain Information |
| References: | Source: MITRE
Type: CNA
CVE-2021-1877
Source: XF
Type: UNKNOWN
apple-ios-cve20211877-info-disc(200704)
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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