PT-2021-18815 · Apple · Ios+4

Tavis Ormandy · Published 2021-05-24 · Updated 2021-09-17 · CVE-2021-30698

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions macOS Big Sur versions prior to 11.4 Safari versions prior to 14.1.1 iOS versions prior to 14.6 iPadOS versions prior to 14.6

Description A null pointer dereference issue was addressed with improved input validation, which may allow a remote attacker to cause a denial of service.

Recommendations For macOS Big Sur versions prior to 11.4, update to macOS Big Sur 11.4 to resolve the issue. For Safari versions prior to 14.1.1, update to Safari 14.1.1 to resolve the issue. For iOS versions prior to 14.6, update to iOS 14.6 to resolve the issue. For iPadOS versions prior to 14.6, update to iPadOS 14.6 to resolve the issue.

Fix

DoS

NULL Pointer Dereference

Weakness Enumeration

CWE-476

Related Identifiers

CVE-2021-30698

Affected Products

Apple Macos

Safari

Ios

Ipados

Macos Big Sur

References · 8

• https://support.apple.com/en-us/HT212528 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-30698 · Vendor Advisory
• https://support.apple.com/en-us/HT212534 · Vendor Advisory
• https://support.apple.com/en-us/HT212529 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-30698 · Security Note
• https://support.apple.com/en-us/103131 · Note
• https://t.me/cibsecurity/28433 · Telegram Post
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30698 · Note