CVE-2021-31013 : Security Advisory and Response
Discover the details of CVE-2021-31013, an out-of-bounds read vulnerability in Apple products, allowing attackers to expose process memory by processing crafted fonts. Learn about impacts, affected systems, mitigation, and prevention strategies.
An out-of-bounds read vulnerability has been identified and patched in multiple versions of macOS, iOS, and iPadOS. This vulnerability could be exploited by processing a specially crafted font to disclose process memory.
Understanding CVE-2021-31013
This CVE identifies a security flaw related to out-of-bounds read in Apple products.
What is CVE-2021-31013?
CVE-2021-31013 refers to an out-of-bounds read vulnerability discovered in macOS, iOS, and iPadOS, which could allow an attacker to expose process memory by tricking the system into processing a maliciously crafted font.
The Impact of CVE-2021-31013
If successfully exploited, this vulnerability could lead to the disclosure of sensitive information stored in the process memory of the affected devices. Users are advised to update their systems immediately.
Technical Details of CVE-2021-31013
This section delves into the specifics of the vulnerability, affected systems, and the exploitation mechanism.
Vulnerability Description
The vulnerability involves an out-of-bounds read issue that was mitigated through improved bounds checking. It was fixed in macOS Monterey 12.1, iOS 15.2, iPadOS 15.2, and macOS Big Sur 11.6.2.
Affected Systems and Versions
The affected products include macOS versions less than 12.1, macOS versions less than 11.6, and macOS versions less than 15.2.
Exploitation Mechanism
By processing a specially crafted font, an attacker could trigger the vulnerability and potentially access sensitive process memory.
Mitigation and Prevention
To safeguard systems from CVE-2021-31013, immediate actions and long-term security practices are essential.
Immediate Steps to Take
Users should update their Apple devices to the latest available versions that contain the security patches released by Apple. Avoid opening files or fonts from untrusted sources.
Long-Term Security Practices
Regularly apply software updates, maintain good cybersecurity hygiene, and stay informed about the latest security threats to protect against similar vulnerabilities in the future.
Patching and Updates
Apple has addressed this vulnerability in macOS Monterey 12.1, iOS 15.2, iPadOS 15.2, and macOS Big Sur 11.6.2. It is crucial to keep systems up to date with the latest patches to prevent exploitation.