PT-2021-18877 · Apple · Ios+4

Mickey Jin · Published 2021-07-21 · Updated 2021-09-16 · CVE-2021-30796

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Apple iOS versions prior to 14.7 Apple macOS Big Sur versions prior to 11.5 Apple macOS Catalina versions prior to Security Update 2021-004 Apple macOS Mojave versions prior to Security Update 2021-005

Description A logic issue was addressed with improved validation. Processing a maliciously crafted image may lead to a denial of service.

Recommendations For Apple iOS versions prior to 14.7, update to iOS 14.7 or later. For Apple macOS Big Sur versions prior to 11.5, update to macOS Big Sur 11.5 or later. For Apple macOS Catalina versions prior to Security Update 2021-004, apply Security Update 2021-004 or later. For Apple macOS Mojave versions prior to Security Update 2021-005, apply Security Update 2021-005 or later.

Fix

Related Identifiers

CVE-2021-30796

ZDI-21-948

Affected Products

Apple Macos

Ios

Macos Big Sur

Macos Catalina

Macos Mojave

References · 10

• https://support.apple.com/en-us/HT212603 · Vendor Advisory
• https://support.apple.com/en-us/HT212601 · Vendor Advisory
• https://support.apple.com/en-us/HT212600 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-30796 · Security Note
• https://zerodayinitiative.com/advisories/ZDI-21-948 · Security Note
• https://osv.dev/vulnerability/CVE-2021-30796 · Vendor Advisory
• https://support.apple.com/en-us/HT212602 · Vendor Advisory
• https://support.apple.com/en-us/102849 · Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30796 · Note
• https://t.me/cibsecurity/28440 · Telegram Post