PT-2021-13643 · Apple · Macos Mojave+7

Gabe Kirkpatrick + 1 · Published 2021-04-26 · Updated 2021-09-20 · CVE-2021-1883

Positive Technologies (AI Summary)

CVSS v3.1

5.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: macOS Mojave versions prior to Security Update 2021-004 macOS Catalina versions prior to Security Update 2021-003 macOS Big Sur versions prior to 11.3 iOS versions prior to 14.5 iPadOS versions prior to 14.5 watchOS versions prior to 7.4 tvOS versions prior to 14.5

Description: The issue is related to the processing of maliciously crafted server messages, which may lead to heap corruption. Improved checks have been implemented to address this issue.

Recommendations: For macOS Mojave, apply Security Update 2021-004. For macOS Catalina, apply Security Update 2021-003. For macOS Big Sur, update to version 11.3. For iOS, update to version 14.5. For iPadOS, update to version 14.5. For watchOS, update to version 7.4. For tvOS, update to version 14.5.

Fix

Memory Corruption

Weakness Enumeration

CWE-787

Related Identifiers

CVE-2021-1883

Affected Products

Apple Macos

Ios

Ipados

Macos Big Sur

Macos Catalina

Macos Mojave

Tvos

Watchos

References · 11

• https://support.apple.com/en-us/HT212317 · Vendor Advisory
• https://support.apple.com/en-us/HT212325 · Vendor Advisory
• https://support.apple.com/en-us/HT212530 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-1883 · Security Note
• https://support.apple.com/en-us/HT212324 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-1883 · Vendor Advisory
• https://support.apple.com/en-us/HT212323 · Vendor Advisory
• https://support.apple.com/en-us/HT212531 · Vendor Advisory
• https://support.apple.com/en-us/103126 · Note
• https://t.me/cibsecurity/28439 · Telegram Post
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1883 · Note