CVE-2021-1877

CVSS V2 Medium 4.9 CVSS V3 Medium 5.5

Description

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.

Overview

CVE ID
CVE-2021-1877

Assigner
product-security@apple.com

Vulnerability Status
Analyzed

Published Version
2021-09-08T15:15:12

Last Modified Date
2021-09-20T12:09:40

Weakness Enumerations

CWE	URL
CWE-125	http://cwe.mitre.org/data/definitions/125.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version Start	Version End
cpe:2.3:o:apple:ipados::::::::	1	OR		14.5
cpe:2.3:o:apple:iphone_os::::::::	1	OR		14.5

CVSS Version 2

Version
2.0

Vector String
AV:L/AC:L/Au:N/C:C/I:N/A:N

Access Vector
LOCAL

Access Compatibility
LOW

Authentication
NONE

Confidentiality Impact
COMPLETE

Integrity Impact
NONE

Availability Impact
NONE

Base Score
4.9

Severity
MEDIUM

Exploitability Score
3.9

Impact Score
6.9

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
LOCAL

Attack Compatibility
LOW

Privileges Required
LOW

User Interaction
NONE

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
NONE

Base Score
5.5

Base Severity
MEDIUM

Exploitability Score
1.8

Impact Score
3.6

References

Reference URL	Reference Tags
https://support.apple.com/en-us/HT212317	Vendor Advisory

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-1877
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1877

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 16:04:39				Added to TrackCVE
2022-12-05 10:01:32	2021-09-08T15:15Z	2021-09-08T15:15:12	CVE Published Date	updated
2022-12-05 10:01:32		2021-09-20T12:09:40	CVE Modified Date	updated
2022-12-05 10:01:32		Analyzed	Vulnerability Status	updated