CVE-2021-23995 : What You Need to Know
Learn about CVE-2021-23995, a use-after-free vulnerability in Mozilla Firefox ESR, Thunderbird, and Firefox, potentially enabling arbitrary code execution. Find mitigation steps and updates.
A detailed overview of CVE-2021-23995 highlighting the vulnerability, affected systems, impact, and mitigation steps.
Understanding CVE-2021-23995
This section delves into the specifics of the vulnerability, its impact, and how it can be mitigated.
What is CVE-2021-23995?
CVE-2021-23995 involves a use-after-free vulnerability in Responsive Design Mode in Mozilla Firefox ESR, Thunderbird, and Firefox, potentially allowing arbitrary code execution.
The Impact of CVE-2021-23995
The vulnerability in Responsive Design Mode could be exploited by an attacker to execute arbitrary code, posing a significant security risk to affected systems.
Technical Details of CVE-2021-23995
Explore the technical details of the vulnerability, including its description, affected systems, and the exploitation mechanism.
Vulnerability Description
When Responsive Design Mode was enabled, references to freed objects could be utilized to execute arbitrary code, impacting Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88.
Affected Systems and Versions
Mozilla products including Firefox ESR < 78.10, Thunderbird < 78.10, and Firefox < 88 are susceptible to this use-after-free vulnerability.
Exploitation Mechanism
By exploiting the freed object references in Responsive Design Mode, threat actors could potentially run arbitrary code on vulnerable systems.
Mitigation and Prevention
Discover the essential steps to mitigate the CVE-2021-23995 vulnerability and secure your systems.
Immediate Steps to Take
Users are advised to update their Mozilla products to versions that address the use-after-free vulnerability and follow secure browsing practices.
Long-Term Security Practices
Implementing regular software updates, security patches, and staying informed about potential security risks is crucial for long-term defense against vulnerabilities.
Patching and Updates
Mozilla provides patches and updates to address CVE-2021-23995, ensuring that users can protect their systems from potential exploitation.