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Date: Mon, 20 Sep 2021 14:44:34 -0700
From: product-security-noreply--- via Fulldisclosure
 <fulldisclosure@...lists.org>
To: security-announce@...ts.apple.com
Subject: [FD] APPLE-SA-2021-09-20-8 Additional information for
 APPLE-SA-2021-09-13-4 Security Update 2021-005 Catalina

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APPLE-SA-2021-09-20-8 Additional information for
APPLE-SA-2021-09-13-4 Security Update 2021-005 Catalina

Security Update 2021-005 Catalina addresses the following issues.
Information about the security content is also available at
https://support.apple.com/HT212805.

CoreGraphics
Available for: macOS Catalina
Impact: Processing a maliciously crafted PDF may lead to arbitrary
code execution. Apple is aware of a report that this issue may have
been actively exploited.
Description: An integer overflow was addressed with improved input
validation.
CVE-2021-30860: The Citizen Lab

CoreServices
Available for: macOS Catalina
Impact: A sandboxed process may be able to circumvent sandbox
restrictions
Description: An access issue was addressed with improved access
restrictions.
CVE-2021-30783: an anonymous researcher, Ron Hass (@ronhass7) of
Perception Point
Entry added September 20, 2021

CUPS
Available for: macOS Catalina
Impact: A local attacker may be able to elevate their privileges
Description: A permissions issue existed. This issue was addressed
with improved permission validation.
CVE-2021-30827: an anonymous researcher
Entry added September 20, 2021

CUPS
Available for: macOS Catalina
Impact: A local user may be able to read arbitrary files as root
Description: This issue was addressed with improved checks.
CVE-2021-30828: an anonymous researcher
Entry added September 20, 2021

CUPS
Available for: macOS Catalina
Impact: A local user may be able to execute arbitrary files
Description: A URI parsing issue was addressed with improved parsing.
CVE-2021-30829: an anonymous researcher
Entry added September 20, 2021

curl
Available for: macOS Catalina
Impact: curl could potentially reveal sensitive internal information
to the server using a clear-text network protocol
Description: A buffer overflow was addressed with improved input
validation.
CVE-2021-22925
Entry added September 20, 2021

CVMS
Available for: macOS Catalina
Impact: A local attacker may be able to elevate their privileges
Description: A memory corruption issue was addressed with improved
state management.
CVE-2021-30832: Mickey Jin (@patch1t) of Trend Micro
Entry added September 20, 2021

FontParser
Available for: macOS Catalina
Impact: Processing a maliciously crafted dfont file may lead to
arbitrary code execution
Description: This issue was addressed with improved checks.
CVE-2021-30841: Xingwei Lin of Ant Security Light-Year Lab
CVE-2021-30842: Xingwei Lin of Ant Security Light-Year Lab
CVE-2021-30843: Xingwei Lin of Ant Security Light-Year Lab
Entry added September 20, 2021

ImageIO
Available for: macOS Catalina
Impact: Processing a maliciously crafted image may lead to arbitrary
code execution
Description: This issue was addressed with improved checks.
CVE-2021-30835: Ye Zhang of Baidu Security
CVE-2021-30847: Mike Zhang of Pangu Lab
Entry added September 20, 2021

Kernel
Available for: macOS Catalina
Impact: A malicious application may be able to execute arbitrary code
with kernel privileges
Description: A memory corruption issue was addressed with improved
memory handling.
CVE-2021-30830: Zweig of Kunlun Lab
Entry added September 20, 2021

Kernel
Available for: macOS Catalina
Impact: A malicious application may be able to execute arbitrary code
with kernel privileges
Description: An out-of-bounds read was addressed with improved input
validation.
CVE-2021-30865: Zweig of Kunlun Lab
Entry added September 20, 2021

Kernel
Available for: macOS Catalina
Impact: Mounting a maliciously crafted NFS network share may lead to
arbitrary code execution with system privileges
Description: A race condition was addressed with additional
validation.
CVE-2020-29622: Jordy Zomer of Certified Secure
Entry added September 20, 2021

Kernel
Available for: macOS Catalina
Impact: A malicious application may be able to execute arbitrary code
with kernel privileges
Description: A race condition was addressed with improved locking.
CVE-2021-30857: Zweig of Kunlun Lab
Entry added September 20, 2021

Kernel
Available for: macOS Catalina
Impact: A malicious application may be able to execute arbitrary code
with kernel privileges
Description: A type confusion issue was addressed with improved state
handling.
CVE-2021-30859: Apple
Entry added September 20, 2021

libexpat
Available for: macOS Catalina
Impact: A remote attacker may be able to cause a denial of service
Description: This issue was addressed by updating expat to version
2.4.1.
CVE-2013-0340: an anonymous researcher
Entry added September 20, 2021

Preferences
Available for: macOS Catalina
Impact: An application may be able to access restricted files
Description: A validation issue existed in the handling of symlinks.
This issue was addressed with improved validation of symlinks.
CVE-2021-30855: Zhipeng Huo (@R3dF09) and Yuebin Sun (@yuebinsun2020)
of Tencent Security Xuanwu Lab (xlab.tencent.com)
Entry added September 20, 2021

Sandbox
Available for: macOS Catalina
Impact: A user may gain access to protected parts of the file system
Description: An access issue was addressed with improved access
restrictions.
CVE-2021-30850: an anonymous researcher
Entry added September 20, 2021

SMB
Available for: macOS Catalina
Impact: A remote attacker may be able to leak memory
Description: A logic issue was addressed with improved state
management.
CVE-2021-30844: Peter Nguyen Vu Hoang of STAR Labs
Entry added September 20, 2021

TCC
Available for: macOS Catalina
Impact: A malicious application may be able to bypass Privacy
preferences
Description: A permissions issue was addressed with improved
validation.
CVE-2021-30713: an anonymous researcher
Entry added September 20, 2021

Additional recognition

Bluetooth
We would like to acknowledge say2 of ENKI for their assistance.
Entry added September 20, 2021

CoreML
We would like to acknowledge hjy79425575 working with Trend Micro
Zero Day Initiative for their assistance.
Entry added September 20, 2021

CUPS
We would like to acknowledge an anonymous researcher for their
assistance.
Entry added September 20, 2021

Kernel
We would like to acknowledge Anthony Steinhauser of Google's Safeside
project for their assistance.
Entry added September 20, 2021

smbx
We would like to acknowledge Zhongcheng Li (CK01) for their
assistance.
Entry added September 20, 2021

Installation note:

This update may be obtained from the Mac App Store or
Apple's Software Downloads web site:
https://support.apple.com/downloads/

Information will also be posted to the Apple Security Updates
web site: https://support.apple.com/kb/HT201222

This message is signed with Apple's Product Security PGP key,
and details are available at:
https://www.apple.com/support/security/pgp/

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