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Mend.io Vulnerability Database

CVE-2021-30858

Date: August 24, 2021

A use after free issue was addressed with improved memory management. This issue is fixed in iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.

Severity Score

8.8

Related Resources (26)

Url: https://support.apple.com/en-us/HT212804

Url: http://www.openwall.com/lists/oss-security/2021/09/20/1

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XYNV7ASK4LQVAUMJXNXBS3Z7RVDQ2N3W/

Url: https://support.apple.com/en-us/HT212807

Url: https://support.apple.com/kb/HT212824

Url: https://security.alpinelinux.org/vuln/CVE-2021-30858

Url: http://seclists.org/fulldisclosure/2021/Sep/27

Url: http://seclists.org/fulldisclosure/2021/Sep/29

Url: http://www.openwall.com/lists/oss-security/2021/10/27/4

Url: https://nvd.nist.gov/vuln/detail/CVE-2021-30858

Url: http://www.openwall.com/lists/oss-security/2021/10/26/9

Url: https://security-tracker.debian.org/tracker/CVE-2021-30858

Url: http://seclists.org/fulldisclosure/2021/Sep/25

Url: https://www.debian.org/security/2021/dsa-4976

Url: https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/BO6DMTHZR57JDBOXPSNR2MKDMCRWV265/

Url: https://www.debian.org/security/2021/dsa-4975

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XYNV7ASK4LQVAUMJXNXBS3Z7RVDQ2N3W/

Url: http://www.openwall.com/lists/oss-security/2021/10/27/2

Url: http://seclists.org/fulldisclosure/2021/Sep/50

Url: http://www.openwall.com/lists/oss-security/2021/10/27/1

Url: http://seclists.org/fulldisclosure/2021/Sep/39

Url: http://seclists.org/fulldisclosure/2021/Sep/38

Url: https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BO6DMTHZR57JDBOXPSNR2MKDMCRWV265/

Url: https://people.canonical.com/~ubuntu-security/cve/CVE-2021-30858

Url: https://access.redhat.com/security/cve/CVE-2021-30858

Url: https://www.mend.io/vulnerability-database/CVE-2021-30858

Severity Score

8.8

Weakness Type (CWE)

Use After Free

CWE-416

CVSS v3.1

Base Score:	8.8
Attack Vector (AV):	NETWORK
Attack Complexity (AC):	LOW
Privileges Required (PR):	NONE
User Interaction (UI):	REQUIRED
Scope (S):	UNCHANGED
Confidentiality (C):	HIGH
Integrity (I):	HIGH
Availability (A):	HIGH

CVSS v2

Base Score:	6.8
Access Vector (AV):	NETWORK
Access Complexity (AC):	MEDIUM
Authentication (AU):	NONE
Confidentiality (C):	PARTIAL
Integrity (I):	PARTIAL
Availability (A):	PARTIAL
Additional information:

Mend.io Vulnerability Database

We found results for “”

CVE-2021-30858

Date: August 24, 2021

Severity Score

Related Resources (26)

Severity Score

Weakness Type (CWE)

CVSS v3.1

CVSS v2

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