PT-2020-6109 · Apple+1 · Ipados+9

Published 2020-11-12 · Updated 2021-03-10 · CVE-2020-27911

Positive Technologies (AI Summary)

CVSS v2.0

9.3

High

Base vector

AV:N/AC:M/Au:N/C:C/I:C/A:C

Name of the Vulnerable Software and Affected Versions macOS Big Sur versions prior to 11.0.1 watchOS versions prior to 7.1 iOS versions prior to 14.2 iPadOS versions prior to 14.2 iCloud for Windows versions prior to 11.5 tvOS versions prior to 14.2 iTunes for Windows versions prior to 12.11

Description The issue is related to an integer overflow that was addressed through improved input validation. A remote attacker may be able to cause unexpected application termination or arbitrary code execution. The vulnerability is also described as a buffer overflow issue in the libxml2 library of Mac OS, which can allow an attacker to execute arbitrary code or cause a denial of service.

Recommendations For macOS Big Sur versions prior to 11.0.1, update to macOS Big Sur 11.0.1 or later. For watchOS versions prior to 7.1, update to watchOS 7.1 or later. For iOS versions prior to 14.2, update to iOS 14.2 or later. For iPadOS versions prior to 14.2, update to iPadOS 14.2 or later. For iCloud for Windows versions prior to 11.5, update to iCloud for Windows 11.5 or later. For tvOS versions prior to 14.2, update to tvOS 14.2 or later. For iTunes for Windows versions prior to 12.11, update to iTunes 12.11 or later.

Fix

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

BDU:2021-03031

CVE-2020-27911

Affected Products

Apple Macos

Icloud For Windows

Ios

Ipados

Itunes

Itunes For Windows

Libxml2

Macos Big Sur

Tvos

Watchos

References · 20

• https://support.apple.com/en-us/HT211933 · Vendor Advisory
• https://support.apple.com/en-us/HT211928 · Vendor Advisory
• https://support.apple.com/en-us/HT211935 · Vendor Advisory
• https://support.apple.com/en-us/HT211929 · Vendor Advisory
• https://support.apple.com/kb/HT212011 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-27911 · Security Note
• https://support.apple.com/en-us/HT211930 · Vendor Advisory
• https://support.apple.com/en-us/HT211931 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-27911 · Vendor Advisory
• https://bdu.fstec.ru/vul/2021-03031 · Security Note
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-27911 · Note
• https://t.me/cvenotify/7126 · Telegram Post
• https://t.me/cvenotify/11082 · Telegram Post
• https://t.me/cibsecurity/17301 · Telegram Post
• https://t.me/cvenotify/6972 · Telegram Post