CVE-2020-9823 : Security Advisory and Response
Learn about CVE-2020-9823, a security flaw in iOS and iPadOS versions before 13.5, allowing users removed from iMessage conversations to alter state. Find mitigation steps and prevention measures here.
This CVE-2020-9823 article provides details about a security issue in iOS and iPadOS versions prior to 13.5, allowing users removed from an iMessage conversation to alter state.
Understanding CVE-2020-9823
This CVE-2020-9823 vulnerability was addressed with improved checks in iOS 13.5 and iPadOS 13.5, preventing users from altering state after being removed from an iMessage conversation.
What is CVE-2020-9823?
CVE-2020-9823 is a security vulnerability in iOS and iPadOS versions before 13.5 that enables users removed from an iMessage conversation to still modify the conversation's state.
The Impact of CVE-2020-9823
The vulnerability allows unauthorized users to manipulate the state of an iMessage conversation even after being removed, potentially leading to privacy breaches and unauthorized actions.
Technical Details of CVE-2020-9823
This section provides technical insights into the vulnerability.
Vulnerability Description
The issue in iOS and iPadOS versions prior to 13.5 allows users removed from an iMessage conversation to retain the ability to alter the conversation's state.
Affected Systems and Versions
- Product: iOS
- Vendor: Apple
- Versions Affected: iOS versions less than 13.5 and iPadOS versions less than 13.5
Exploitation Mechanism
Users who have been removed from an iMessage conversation can exploit this vulnerability to make unauthorized changes to the conversation's state.
Mitigation and Prevention
Protect your systems from CVE-2020-9823 with the following steps:
Immediate Steps to Take
- Update affected devices to iOS 13.5 or iPadOS 13.5 to mitigate the vulnerability.
- Regularly monitor iMessage conversations for any unauthorized alterations.
Long-Term Security Practices
- Educate users on the importance of updating their devices promptly.
- Implement access controls to prevent unauthorized users from joining or altering conversations.
Patching and Updates
- Apply security patches and updates provided by Apple to ensure the ongoing protection of your devices.