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CVE-2021-1844

Date: April 2, 2021

A memory corruption issue was addressed with improved validation. This issue is fixed in iOS 14.4.1 and iPadOS 14.4.1, Safari 14.0.3 (v. 14610.4.3.1.7 and 15610.4.3.1.7), watchOS 7.3.2, macOS Big Sur 11.2.3. Processing maliciously crafted web content may lead to arbitrary code execution.

Severity Score

Related Resources (15)

https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/
http://seclists.org/fulldisclosure/2021/Apr/55
https://support.apple.com/kb/HT212323
https://people.canonical.com/~ubuntu-security/cve/CVE-2021-1844
https://security-tracker.debian.org/tracker/CVE-2021-1844
https://access.redhat.com/security/cve/CVE-2021-1844
https://nvd.nist.gov/vuln/detail/CVE-2021-1844
https://support.apple.com/en-us/HT212221
https://support.apple.com/en-us/HT212220
https://support.apple.com/en-us/HT212223
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/
https://support.apple.com/en-us/HT212222
https://www.debian.org/security/2021/dsa-4923
https://security.alpinelinux.org/vuln/CVE-2021-1844
https://www.mend.io/vulnerability-database/CVE-2021-1844

Severity Score

Weakness Type (CWE)

Improper Restriction of Operations within the Bounds of a Memory Buffer

CWE-119

Out-of-bounds Write

CWE-787

CVSS v3.1

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

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